Home / 3,139.79-4,333.52-2,077.61

Finding the Fourth Proportional to 3,139.79, 4,333.52 and 2,077.61

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Solution

The fourth proportional to 3,139.79, 4,333.52 and 2,077.61 is: 2,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.79 : 4,333.52 = 2,077.61 : x
  2. Step 2: Convert to fraction form
    3,139.79/4,333.52 = 2,077.61/x
  3. Step 3: Cross multiply
    3,139.79x = 4,333.52 × 2,077.61
  4. Step 4: Simplify right side
    3,139.79x = 9,003,364.49
  5. Step 5: Solve for x
    x = 9,003,364.49/3,139.79
  6. Step 6: Final answer
    x = 2,867.51

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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.