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Finding the Fourth Proportional to 9,381.60, 14,064.30 and 5,679.90

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Solution

The fourth proportional to 9,381.60, 14,064.30 and 5,679.90 is: 8,514.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,381.60 : 14,064.30 = 5,679.90 : x
  2. Step 2: Convert to fraction form
    9,381.60/14,064.30 = 5,679.90/x
  3. Step 3: Cross multiply
    9,381.60x = 14,064.30 × 5,679.90
  4. Step 4: Simplify right side
    9,381.60x = 79,883,817.57
  5. Step 5: Solve for x
    x = 79,883,817.57/9,381.60
  6. Step 6: Final answer
    x = 8,514.95

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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.