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Finding the Fourth Proportional to 7,661.94, 11,497.35 and 2,985.18

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Solution

The fourth proportional to 7,661.94, 11,497.35 and 2,985.18 is: 4,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.94 : 11,497.35 = 2,985.18 : x
  2. Step 2: Convert to fraction form
    7,661.94/11,497.35 = 2,985.18/x
  3. Step 3: Cross multiply
    7,661.94x = 11,497.35 × 2,985.18
  4. Step 4: Simplify right side
    7,661.94x = 34,321,659.27
  5. Step 5: Solve for x
    x = 34,321,659.27/7,661.94
  6. Step 6: Final answer
    x = 4,479.50

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Half scale
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Double scale
Find fourth proportional to 7,662.94, 11,498.85 and 2,986.18
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.