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Finding the Fourth Proportional to 9,166.74, 12,617.98 and 7,985.76

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Solution

The fourth proportional to 9,166.74, 12,617.98 and 7,985.76 is: 10,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,166.74 : 12,617.98 = 7,985.76 : x
  2. Step 2: Convert to fraction form
    9,166.74/12,617.98 = 7,985.76/x
  3. Step 3: Cross multiply
    9,166.74x = 12,617.98 × 7,985.76
  4. Step 4: Simplify right side
    9,166.74x = 100,764,159.96
  5. Step 5: Solve for x
    x = 100,764,159.96/9,166.74
  6. Step 6: Final answer
    x = 10,992.37

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Double scale
Find fourth proportional to 9,167.74, 12,619.36 and 7,986.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.