Home / 3,127.28-4,315.48-1,730

Finding the Fourth Proportional to 3,127.28, 4,315.48 and 1,730

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Solution

The fourth proportional to 3,127.28, 4,315.48 and 1,730 is: 2,387.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.28 : 4,315.48 = 1,730 : x
  2. Step 2: Convert to fraction form
    3,127.28/4,315.48 = 1,730/x
  3. Step 3: Cross multiply
    3,127.28x = 4,315.48 × 1,730
  4. Step 4: Simplify right side
    3,127.28x = 7,465,780.40
  5. Step 5: Solve for x
    x = 7,465,780.40/3,127.28
  6. Step 6: Final answer
    x = 2,387.31

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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.