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Finding the Fourth Proportional to 8,373.70, 12,556.90 and 4,211.11

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Solution

The fourth proportional to 8,373.70, 12,556.90 and 4,211.11 is: 6,314.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,373.70 : 12,556.90 = 4,211.11 : x
  2. Step 2: Convert to fraction form
    8,373.70/12,556.90 = 4,211.11/x
  3. Step 3: Cross multiply
    8,373.70x = 12,556.90 × 4,211.11
  4. Step 4: Simplify right side
    8,373.70x = 52,878,487.16
  5. Step 5: Solve for x
    x = 52,878,487.16/8,373.70
  6. Step 6: Final answer
    x = 6,314.83

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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.