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Finding the Fourth Proportional to 8,394.52, 12,591.53 and 2,154.28

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Solution

The fourth proportional to 8,394.52, 12,591.53 and 2,154.28 is: 3,231.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.52 : 12,591.53 = 2,154.28 : x
  2. Step 2: Convert to fraction form
    8,394.52/12,591.53 = 2,154.28/x
  3. Step 3: Cross multiply
    8,394.52x = 12,591.53 × 2,154.28
  4. Step 4: Simplify right side
    8,394.52x = 27,125,681.25
  5. Step 5: Solve for x
    x = 27,125,681.25/8,394.52
  6. Step 6: Final answer
    x = 3,231.36

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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.