Home / 3,720.65-5,580.05-1,255.41

Finding the Fourth Proportional to 3,720.65, 5,580.05 and 1,255.41

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Solution

The fourth proportional to 3,720.65, 5,580.05 and 1,255.41 is: 1,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.65 : 5,580.05 = 1,255.41 : x
  2. Step 2: Convert to fraction form
    3,720.65/5,580.05 = 1,255.41/x
  3. Step 3: Cross multiply
    3,720.65x = 5,580.05 × 1,255.41
  4. Step 4: Simplify right side
    3,720.65x = 7,005,244.29
  5. Step 5: Solve for x
    x = 7,005,244.29/3,720.65
  6. Step 6: Final answer
    x = 1,882.80

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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.