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Finding the Fourth Proportional to 6,251.60, 8,629.80 and 4,013.60

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Solution

The fourth proportional to 6,251.60, 8,629.80 and 4,013.60 is: 5,540.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,251.60 : 8,629.80 = 4,013.60 : x
  2. Step 2: Convert to fraction form
    6,251.60/8,629.80 = 4,013.60/x
  3. Step 3: Cross multiply
    6,251.60x = 8,629.80 × 4,013.60
  4. Step 4: Simplify right side
    6,251.60x = 34,636,565.28
  5. Step 5: Solve for x
    x = 34,636,565.28/6,251.60
  6. Step 6: Final answer
    x = 5,540.43

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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.