Home / 5,423.56-8,135.58-1,959.88

Finding the Fourth Proportional to 5,423.56, 8,135.58 and 1,959.88

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Solution

The fourth proportional to 5,423.56, 8,135.58 and 1,959.88 is: 2,939.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.56 : 8,135.58 = 1,959.88 : x
  2. Step 2: Convert to fraction form
    5,423.56/8,135.58 = 1,959.88/x
  3. Step 3: Cross multiply
    5,423.56x = 8,135.58 × 1,959.88
  4. Step 4: Simplify right side
    5,423.56x = 15,944,760.53
  5. Step 5: Solve for x
    x = 15,944,760.53/5,423.56
  6. Step 6: Final answer
    x = 2,939.91

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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.