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Finding the Fourth Proportional to 12,610.59, 18,915.90 and 5,206.92

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Solution

The fourth proportional to 12,610.59, 18,915.90 and 5,206.92 is: 7,810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,610.59 : 18,915.90 = 5,206.92 : x
  2. Step 2: Convert to fraction form
    12,610.59/18,915.90 = 5,206.92/x
  3. Step 3: Cross multiply
    12,610.59x = 18,915.90 × 5,206.92
  4. Step 4: Simplify right side
    12,610.59x = 98,493,487.57
  5. Step 5: Solve for x
    x = 98,493,487.57/12,610.59
  6. Step 6: Final answer
    x = 7,810.38

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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.