Home / 3,937.20-5,435.28-2,684.76

Finding the Fourth Proportional to 3,937.20, 5,435.28 and 2,684.76

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Solution

The fourth proportional to 3,937.20, 5,435.28 and 2,684.76 is: 3,706.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.20 : 5,435.28 = 2,684.76 : x
  2. Step 2: Convert to fraction form
    3,937.20/5,435.28 = 2,684.76/x
  3. Step 3: Cross multiply
    3,937.20x = 5,435.28 × 2,684.76
  4. Step 4: Simplify right side
    3,937.20x = 14,592,422.33
  5. Step 5: Solve for x
    x = 14,592,422.33/3,937.20
  6. Step 6: Final answer
    x = 3,706.29

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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.