Home / 3,710.38-5,120.40-2,031.82

Finding the Fourth Proportional to 3,710.38, 5,120.40 and 2,031.82

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Solution

The fourth proportional to 3,710.38, 5,120.40 and 2,031.82 is: 2,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.38 : 5,120.40 = 2,031.82 : x
  2. Step 2: Convert to fraction form
    3,710.38/5,120.40 = 2,031.82/x
  3. Step 3: Cross multiply
    3,710.38x = 5,120.40 × 2,031.82
  4. Step 4: Simplify right side
    3,710.38x = 10,403,731.13
  5. Step 5: Solve for x
    x = 10,403,731.13/3,710.38
  6. Step 6: Final answer
    x = 2,803.95

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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.