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Finding the Fourth Proportional to 8,766.40, 13,130.40 and 7,614.40

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Solution

The fourth proportional to 8,766.40, 13,130.40 and 7,614.40 is: 11,404.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,766.40 : 13,130.40 = 7,614.40 : x
  2. Step 2: Convert to fraction form
    8,766.40/13,130.40 = 7,614.40/x
  3. Step 3: Cross multiply
    8,766.40x = 13,130.40 × 7,614.40
  4. Step 4: Simplify right side
    8,766.40x = 99,980,117.76
  5. Step 5: Solve for x
    x = 99,980,117.76/8,766.40
  6. Step 6: Final answer
    x = 11,404.92

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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.