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Finding the Fourth Proportional to 8,374.62, 12,561.05 and 4,212.93

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Solution

The fourth proportional to 8,374.62, 12,561.05 and 4,212.93 is: 6,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.62 : 12,561.05 = 4,212.93 : x
  2. Step 2: Convert to fraction form
    8,374.62/12,561.05 = 4,212.93/x
  3. Step 3: Cross multiply
    8,374.62x = 12,561.05 × 4,212.93
  4. Step 4: Simplify right side
    8,374.62x = 52,918,803.31
  5. Step 5: Solve for x
    x = 52,918,803.31/8,374.62
  6. Step 6: Final answer
    x = 6,318.95

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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.