Home / 3,721.95-5,580.90-1,381.86

Finding the Fourth Proportional to 3,721.95, 5,580.90 and 1,381.86

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Solution

The fourth proportional to 3,721.95, 5,580.90 and 1,381.86 is: 2,072.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.95 : 5,580.90 = 1,381.86 : x
  2. Step 2: Convert to fraction form
    3,721.95/5,580.90 = 1,381.86/x
  3. Step 3: Cross multiply
    3,721.95x = 5,580.90 × 1,381.86
  4. Step 4: Simplify right side
    3,721.95x = 7,712,022.47
  5. Step 5: Solve for x
    x = 7,712,022.47/3,721.95
  6. Step 6: Final answer
    x = 2,072.04

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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.