Home / 3,720.16-5,581.68-1,411.12

Finding the Fourth Proportional to 3,720.16, 5,581.68 and 1,411.12

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Solution

The fourth proportional to 3,720.16, 5,581.68 and 1,411.12 is: 2,117.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.16 : 5,581.68 = 1,411.12 : x
  2. Step 2: Convert to fraction form
    3,720.16/5,581.68 = 1,411.12/x
  3. Step 3: Cross multiply
    3,720.16x = 5,581.68 × 1,411.12
  4. Step 4: Simplify right side
    3,720.16x = 7,876,420.28
  5. Step 5: Solve for x
    x = 7,876,420.28/3,720.16
  6. Step 6: Final answer
    x = 2,117.23

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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.