Home / 3,721.20-5,580.18-1,871.16

Finding the Fourth Proportional to 3,721.20, 5,580.18 and 1,871.16

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Solution

The fourth proportional to 3,721.20, 5,580.18 and 1,871.16 is: 2,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.20 : 5,580.18 = 1,871.16 : x
  2. Step 2: Convert to fraction form
    3,721.20/5,580.18 = 1,871.16/x
  3. Step 3: Cross multiply
    3,721.20x = 5,580.18 × 1,871.16
  4. Step 4: Simplify right side
    3,721.20x = 10,441,409.61
  5. Step 5: Solve for x
    x = 10,441,409.61/3,721.20
  6. Step 6: Final answer
    x = 2,805.93

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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.