Home / 3,139.38-4,710.10-1,291.37

Finding the Fourth Proportional to 3,139.38, 4,710.10 and 1,291.37

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Solution

The fourth proportional to 3,139.38, 4,710.10 and 1,291.37 is: 1,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.38 : 4,710.10 = 1,291.37 : x
  2. Step 2: Convert to fraction form
    3,139.38/4,710.10 = 1,291.37/x
  3. Step 3: Cross multiply
    3,139.38x = 4,710.10 × 1,291.37
  4. Step 4: Simplify right side
    3,139.38x = 6,082,455.06
  5. Step 5: Solve for x
    x = 6,082,455.06/3,139.38
  6. Step 6: Final answer
    x = 1,937.47

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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.