Home / 2,921.68-4,031.92-1,873.74

Finding the Fourth Proportional to 2,921.68, 4,031.92 and 1,873.74

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Solution

The fourth proportional to 2,921.68, 4,031.92 and 1,873.74 is: 2,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.68 : 4,031.92 = 1,873.74 : x
  2. Step 2: Convert to fraction form
    2,921.68/4,031.92 = 1,873.74/x
  3. Step 3: Cross multiply
    2,921.68x = 4,031.92 × 1,873.74
  4. Step 4: Simplify right side
    2,921.68x = 7,554,769.78
  5. Step 5: Solve for x
    x = 7,554,769.78/2,921.68
  6. Step 6: Final answer
    x = 2,585.76

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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.