Home / 4,259.40-6,381.90-3,640.20

Finding the Fourth Proportional to 4,259.40, 6,381.90 and 3,640.20

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Solution

The fourth proportional to 4,259.40, 6,381.90 and 3,640.20 is: 5,454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.40 : 6,381.90 = 3,640.20 : x
  2. Step 2: Convert to fraction form
    4,259.40/6,381.90 = 3,640.20/x
  3. Step 3: Cross multiply
    4,259.40x = 6,381.90 × 3,640.20
  4. Step 4: Simplify right side
    4,259.40x = 23,231,392.38
  5. Step 5: Solve for x
    x = 23,231,392.38/4,259.40
  6. Step 6: Final answer
    x = 5,454.15

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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.