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Finding the Fourth Proportional to 8,356.48, 12,531.48 and 4,458.76

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Solution

The fourth proportional to 8,356.48, 12,531.48 and 4,458.76 is: 6,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.48 : 12,531.48 = 4,458.76 : x
  2. Step 2: Convert to fraction form
    8,356.48/12,531.48 = 4,458.76/x
  3. Step 3: Cross multiply
    8,356.48x = 12,531.48 × 4,458.76
  4. Step 4: Simplify right side
    8,356.48x = 55,874,861.76
  5. Step 5: Solve for x
    x = 55,874,861.76/8,356.48
  6. Step 6: Final answer
    x = 6,686.41

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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.