Home / 3,720.46-5,581.40-1,255.32

Finding the Fourth Proportional to 3,720.46, 5,581.40 and 1,255.32

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Solution

The fourth proportional to 3,720.46, 5,581.40 and 1,255.32 is: 1,883.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.46 : 5,581.40 = 1,255.32 : x
  2. Step 2: Convert to fraction form
    3,720.46/5,581.40 = 1,255.32/x
  3. Step 3: Cross multiply
    3,720.46x = 5,581.40 × 1,255.32
  4. Step 4: Simplify right side
    3,720.46x = 7,006,443.05
  5. Step 5: Solve for x
    x = 7,006,443.05/3,720.46
  6. Step 6: Final answer
    x = 1,883.22

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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.