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Finding the Fourth Proportional to 7,985.83, 11,992.08 and 4,990.84

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Solution

The fourth proportional to 7,985.83, 11,992.08 and 4,990.84 is: 7,494.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.83 : 11,992.08 = 4,990.84 : x
  2. Step 2: Convert to fraction form
    7,985.83/11,992.08 = 4,990.84/x
  3. Step 3: Cross multiply
    7,985.83x = 11,992.08 × 4,990.84
  4. Step 4: Simplify right side
    7,985.83x = 59,850,552.55
  5. Step 5: Solve for x
    x = 59,850,552.55/7,985.83
  6. Step 6: Final answer
    x = 7,494.59

Related Problems

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Half scale
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Double scale
Find fourth proportional to 7,986.83, 11,993.58 and 4,991.84
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.