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Finding the Fourth Proportional to 8,372.40, 12,559.20 and 2,529.40

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Solution

The fourth proportional to 8,372.40, 12,559.20 and 2,529.40 is: 3,794.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.40 : 12,559.20 = 2,529.40 : x
  2. Step 2: Convert to fraction form
    8,372.40/12,559.20 = 2,529.40/x
  3. Step 3: Cross multiply
    8,372.40x = 12,559.20 × 2,529.40
  4. Step 4: Simplify right side
    8,372.40x = 31,767,240.48
  5. Step 5: Solve for x
    x = 31,767,240.48/8,372.40
  6. Step 6: Final answer
    x = 3,794.28

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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.