Home / 5,294.15-7,940.61-1,398.86

Finding the Fourth Proportional to 5,294.15, 7,940.61 and 1,398.86

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Solution

The fourth proportional to 5,294.15, 7,940.61 and 1,398.86 is: 2,098.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,294.15 : 7,940.61 = 1,398.86 : x
  2. Step 2: Convert to fraction form
    5,294.15/7,940.61 = 1,398.86/x
  3. Step 3: Cross multiply
    5,294.15x = 7,940.61 × 1,398.86
  4. Step 4: Simplify right side
    5,294.15x = 11,107,801.70
  5. Step 5: Solve for x
    x = 11,107,801.70/5,294.15
  6. Step 6: Final answer
    x = 2,098.13

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1.5x scale

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.