Home / 3,139.16-4,332.11-1,722.87

Finding the Fourth Proportional to 3,139.16, 4,332.11 and 1,722.87

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Solution

The fourth proportional to 3,139.16, 4,332.11 and 1,722.87 is: 2,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.16 : 4,332.11 = 1,722.87 : x
  2. Step 2: Convert to fraction form
    3,139.16/4,332.11 = 1,722.87/x
  3. Step 3: Cross multiply
    3,139.16x = 4,332.11 × 1,722.87
  4. Step 4: Simplify right side
    3,139.16x = 7,463,653.74
  5. Step 5: Solve for x
    x = 7,463,653.74/3,139.16
  6. Step 6: Final answer
    x = 2,377.60

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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.