Home / 5,418-8,124.30-2,642.94

Finding the Fourth Proportional to 5,418, 8,124.30 and 2,642.94

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Solution

The fourth proportional to 5,418, 8,124.30 and 2,642.94 is: 3,963.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418 : 8,124.30 = 2,642.94 : x
  2. Step 2: Convert to fraction form
    5,418/8,124.30 = 2,642.94/x
  3. Step 3: Cross multiply
    5,418x = 8,124.30 × 2,642.94
  4. Step 4: Simplify right side
    5,418x = 21,472,037.44
  5. Step 5: Solve for x
    x = 21,472,037.44/5,418
  6. Step 6: Final answer
    x = 3,963.09

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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.