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Finding the Fourth Proportional to 8,238.96, 12,352.95 and 4,280.49

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Solution

The fourth proportional to 8,238.96, 12,352.95 and 4,280.49 is: 6,417.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,238.96 : 12,352.95 = 4,280.49 : x
  2. Step 2: Convert to fraction form
    8,238.96/12,352.95 = 4,280.49/x
  3. Step 3: Cross multiply
    8,238.96x = 12,352.95 × 4,280.49
  4. Step 4: Simplify right side
    8,238.96x = 52,876,678.95
  5. Step 5: Solve for x
    x = 52,876,678.95/8,238.96
  6. Step 6: Final answer
    x = 6,417.88

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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.