Home / 2,868.38-3,959.01-1,689.83

Finding the Fourth Proportional to 2,868.38, 3,959.01 and 1,689.83

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Solution

The fourth proportional to 2,868.38, 3,959.01 and 1,689.83 is: 2,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.38 : 3,959.01 = 1,689.83 : x
  2. Step 2: Convert to fraction form
    2,868.38/3,959.01 = 1,689.83/x
  3. Step 3: Cross multiply
    2,868.38x = 3,959.01 × 1,689.83
  4. Step 4: Simplify right side
    2,868.38x = 6,690,034.07
  5. Step 5: Solve for x
    x = 6,690,034.07/2,868.38
  6. Step 6: Final answer
    x = 2,332.34

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1.5x scale

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.