Home / 3,720.15-5,134.91-2,149.29

Finding the Fourth Proportional to 3,720.15, 5,134.91 and 2,149.29

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Solution

The fourth proportional to 3,720.15, 5,134.91 and 2,149.29 is: 2,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.15 : 5,134.91 = 2,149.29 : x
  2. Step 2: Convert to fraction form
    3,720.15/5,134.91 = 2,149.29/x
  3. Step 3: Cross multiply
    3,720.15x = 5,134.91 × 2,149.29
  4. Step 4: Simplify right side
    3,720.15x = 11,036,410.71
  5. Step 5: Solve for x
    x = 11,036,410.71/3,720.15
  6. Step 6: Final answer
    x = 2,966.66

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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.