Home / 3,159.30-4,359.68-1,981.02

Finding the Fourth Proportional to 3,159.30, 4,359.68 and 1,981.02

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Solution

The fourth proportional to 3,159.30, 4,359.68 and 1,981.02 is: 2,733.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.30 : 4,359.68 = 1,981.02 : x
  2. Step 2: Convert to fraction form
    3,159.30/4,359.68 = 1,981.02/x
  3. Step 3: Cross multiply
    3,159.30x = 4,359.68 × 1,981.02
  4. Step 4: Simplify right side
    3,159.30x = 8,636,613.27
  5. Step 5: Solve for x
    x = 8,636,613.27/3,159.30
  6. Step 6: Final answer
    x = 2,733.71

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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.