Home / 7,431.40-11,147.10-6,610.60

Finding the Fourth Proportional to 7,431.40, 11,147.10 and 6,610.60

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Solution

The fourth proportional to 7,431.40, 11,147.10 and 6,610.60 is: 9,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.40 : 11,147.10 = 6,610.60 : x
  2. Step 2: Convert to fraction form
    7,431.40/11,147.10 = 6,610.60/x
  3. Step 3: Cross multiply
    7,431.40x = 11,147.10 × 6,610.60
  4. Step 4: Simplify right side
    7,431.40x = 73,689,019.26
  5. Step 5: Solve for x
    x = 73,689,019.26/7,431.40
  6. Step 6: Final answer
    x = 9,915.90

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Double scale
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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.