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Finding the Fourth Proportional to 8,868.10, 13,253.13 and 8,355.97

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Solution

The fourth proportional to 8,868.10, 13,253.13 and 8,355.97 is: 12,487.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.10 : 13,253.13 = 8,355.97 : x
  2. Step 2: Convert to fraction form
    8,868.10/13,253.13 = 8,355.97/x
  3. Step 3: Cross multiply
    8,868.10x = 13,253.13 × 8,355.97
  4. Step 4: Simplify right side
    8,868.10x = 110,742,756.69
  5. Step 5: Solve for x
    x = 110,742,756.69/8,868.10
  6. Step 6: Final answer
    x = 12,487.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.