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Finding the Fourth Proportional to 8,648.40, 12,984.27 and 5,534.49

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Solution

The fourth proportional to 8,648.40, 12,984.27 and 5,534.49 is: 8,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.40 : 12,984.27 = 5,534.49 : x
  2. Step 2: Convert to fraction form
    8,648.40/12,984.27 = 5,534.49/x
  3. Step 3: Cross multiply
    8,648.40x = 12,984.27 × 5,534.49
  4. Step 4: Simplify right side
    8,648.40x = 71,861,312.47
  5. Step 5: Solve for x
    x = 71,861,312.47/8,648.40
  6. Step 6: Final answer
    x = 8,309.20

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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.