Home / 3,720.12-5,132.28-2,228.12

Finding the Fourth Proportional to 3,720.12, 5,132.28 and 2,228.12

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Solution

The fourth proportional to 3,720.12, 5,132.28 and 2,228.12 is: 3,073.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.12 : 5,132.28 = 2,228.12 : x
  2. Step 2: Convert to fraction form
    3,720.12/5,132.28 = 2,228.12/x
  3. Step 3: Cross multiply
    3,720.12x = 5,132.28 × 2,228.12
  4. Step 4: Simplify right side
    3,720.12x = 11,435,335.71
  5. Step 5: Solve for x
    x = 11,435,335.71/3,720.12
  6. Step 6: Final answer
    x = 3,073.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.