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Finding the Fourth Proportional to 8,873.70, 13,284.60 and 5,387.46

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Solution

The fourth proportional to 8,873.70, 13,284.60 and 5,387.46 is: 8,065.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.70 : 13,284.60 = 5,387.46 : x
  2. Step 2: Convert to fraction form
    8,873.70/13,284.60 = 5,387.46/x
  3. Step 3: Cross multiply
    8,873.70x = 13,284.60 × 5,387.46
  4. Step 4: Simplify right side
    8,873.70x = 71,570,251.12
  5. Step 5: Solve for x
    x = 71,570,251.12/8,873.70
  6. Step 6: Final answer
    x = 8,065.44

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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.