Home / 2,871.59-4,298.38-1,976.90

Finding the Fourth Proportional to 2,871.59, 4,298.38 and 1,976.90

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Solution

The fourth proportional to 2,871.59, 4,298.38 and 1,976.90 is: 2,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.59 : 4,298.38 = 1,976.90 : x
  2. Step 2: Convert to fraction form
    2,871.59/4,298.38 = 1,976.90/x
  3. Step 3: Cross multiply
    2,871.59x = 4,298.38 × 1,976.90
  4. Step 4: Simplify right side
    2,871.59x = 8,497,440.99
  5. Step 5: Solve for x
    x = 8,497,440.99/2,871.59
  6. Step 6: Final answer
    x = 2,959.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.