Home / 5,418.30-8,117.73-5,126.70

Finding the Fourth Proportional to 5,418.30, 8,117.73 and 5,126.70

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Solution

The fourth proportional to 5,418.30, 8,117.73 and 5,126.70 is: 7,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.30 : 8,117.73 = 5,126.70 : x
  2. Step 2: Convert to fraction form
    5,418.30/8,117.73 = 5,126.70/x
  3. Step 3: Cross multiply
    5,418.30x = 8,117.73 × 5,126.70
  4. Step 4: Simplify right side
    5,418.30x = 41,617,166.39
  5. Step 5: Solve for x
    x = 41,617,166.39/5,418.30
  6. Step 6: Final answer
    x = 7,680.85

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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.