Home / 3,720.60-5,581.44-1,124.28

Finding the Fourth Proportional to 3,720.60, 5,581.44 and 1,124.28

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Solution

The fourth proportional to 3,720.60, 5,581.44 and 1,124.28 is: 1,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.60 : 5,581.44 = 1,124.28 : x
  2. Step 2: Convert to fraction form
    3,720.60/5,581.44 = 1,124.28/x
  3. Step 3: Cross multiply
    3,720.60x = 5,581.44 × 1,124.28
  4. Step 4: Simplify right side
    3,720.60x = 6,275,101.36
  5. Step 5: Solve for x
    x = 6,275,101.36/3,720.60
  6. Step 6: Final answer
    x = 1,686.58

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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.