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Finding the Fourth Proportional to 8,337.40, 12,491.70 and 6,868.60

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Solution

The fourth proportional to 8,337.40, 12,491.70 and 6,868.60 is: 10,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,337.40 : 12,491.70 = 6,868.60 : x
  2. Step 2: Convert to fraction form
    8,337.40/12,491.70 = 6,868.60/x
  3. Step 3: Cross multiply
    8,337.40x = 12,491.70 × 6,868.60
  4. Step 4: Simplify right side
    8,337.40x = 85,800,490.62
  5. Step 5: Solve for x
    x = 85,800,490.62/8,337.40
  6. Step 6: Final answer
    x = 10,291.04

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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.