Home / 4,121.92-5,687.16-2,529.40

Finding the Fourth Proportional to 4,121.92, 5,687.16 and 2,529.40

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Solution

The fourth proportional to 4,121.92, 5,687.16 and 2,529.40 is: 3,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.92 : 5,687.16 = 2,529.40 : x
  2. Step 2: Convert to fraction form
    4,121.92/5,687.16 = 2,529.40/x
  3. Step 3: Cross multiply
    4,121.92x = 5,687.16 × 2,529.40
  4. Step 4: Simplify right side
    4,121.92x = 14,385,102.50
  5. Step 5: Solve for x
    x = 14,385,102.50/4,121.92
  6. Step 6: Final answer
    x = 3,489.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.