Home / 3,781.29-5,672.61-1,315.38

Finding the Fourth Proportional to 3,781.29, 5,672.61 and 1,315.38

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Solution

The fourth proportional to 3,781.29, 5,672.61 and 1,315.38 is: 1,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.29 : 5,672.61 = 1,315.38 : x
  2. Step 2: Convert to fraction form
    3,781.29/5,672.61 = 1,315.38/x
  3. Step 3: Cross multiply
    3,781.29x = 5,672.61 × 1,315.38
  4. Step 4: Simplify right side
    3,781.29x = 7,461,637.74
  5. Step 5: Solve for x
    x = 7,461,637.74/3,781.29
  6. Step 6: Final answer
    x = 1,973.30

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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.