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Finding the Fourth Proportional to 8,640.38, 12,967.05 and 5,358.26

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Solution

The fourth proportional to 8,640.38, 12,967.05 and 5,358.26 is: 8,041.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.38 : 12,967.05 = 5,358.26 : x
  2. Step 2: Convert to fraction form
    8,640.38/12,967.05 = 5,358.26/x
  3. Step 3: Cross multiply
    8,640.38x = 12,967.05 × 5,358.26
  4. Step 4: Simplify right side
    8,640.38x = 69,480,825.33
  5. Step 5: Solve for x
    x = 69,480,825.33/8,640.38
  6. Step 6: Final answer
    x = 8,041.41

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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.