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Finding the Fourth Proportional to 8,860.40, 13,274.20 and 5,164.40

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Solution

The fourth proportional to 8,860.40, 13,274.20 and 5,164.40 is: 7,737.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.40 : 13,274.20 = 5,164.40 : x
  2. Step 2: Convert to fraction form
    8,860.40/13,274.20 = 5,164.40/x
  3. Step 3: Cross multiply
    8,860.40x = 13,274.20 × 5,164.40
  4. Step 4: Simplify right side
    8,860.40x = 68,553,278.48
  5. Step 5: Solve for x
    x = 68,553,278.48/8,860.40
  6. Step 6: Final answer
    x = 7,737.04

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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.