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Finding the Fourth Proportional to 8,478.28, 12,724.74 and 5,883.04

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Solution

The fourth proportional to 8,478.28, 12,724.74 and 5,883.04 is: 8,829.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.28 : 12,724.74 = 5,883.04 : x
  2. Step 2: Convert to fraction form
    8,478.28/12,724.74 = 5,883.04/x
  3. Step 3: Cross multiply
    8,478.28x = 12,724.74 × 5,883.04
  4. Step 4: Simplify right side
    8,478.28x = 74,860,154.41
  5. Step 5: Solve for x
    x = 74,860,154.41/8,478.28
  6. Step 6: Final answer
    x = 8,829.64

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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.