Home / 5,218.75-7,826.94-1,520.17

Finding the Fourth Proportional to 5,218.75, 7,826.94 and 1,520.17

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Solution

The fourth proportional to 5,218.75, 7,826.94 and 1,520.17 is: 2,279.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.75 : 7,826.94 = 1,520.17 : x
  2. Step 2: Convert to fraction form
    5,218.75/7,826.94 = 1,520.17/x
  3. Step 3: Cross multiply
    5,218.75x = 7,826.94 × 1,520.17
  4. Step 4: Simplify right side
    5,218.75x = 11,898,279.38
  5. Step 5: Solve for x
    x = 11,898,279.38/5,218.75
  6. Step 6: Final answer
    x = 2,279.91

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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.