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Finding the Fourth Proportional to 9,792.40, 14,717.40 and 8,525.20

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Solution

The fourth proportional to 9,792.40, 14,717.40 and 8,525.20 is: 12,812.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,792.40 : 14,717.40 = 8,525.20 : x
  2. Step 2: Convert to fraction form
    9,792.40/14,717.40 = 8,525.20/x
  3. Step 3: Cross multiply
    9,792.40x = 14,717.40 × 8,525.20
  4. Step 4: Simplify right side
    9,792.40x = 125,468,778.48
  5. Step 5: Solve for x
    x = 125,468,778.48/9,792.40
  6. Step 6: Final answer
    x = 12,812.87

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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.