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Finding the Fourth Proportional to 8,812.60, 12,154.32 and 7,748.10

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Solution

The fourth proportional to 8,812.60, 12,154.32 and 7,748.10 is: 10,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.60 : 12,154.32 = 7,748.10 : x
  2. Step 2: Convert to fraction form
    8,812.60/12,154.32 = 7,748.10/x
  3. Step 3: Cross multiply
    8,812.60x = 12,154.32 × 7,748.10
  4. Step 4: Simplify right side
    8,812.60x = 94,172,886.79
  5. Step 5: Solve for x
    x = 94,172,886.79/8,812.60
  6. Step 6: Final answer
    x = 10,686.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.