Home / 5,038.90-7,550.64-2,115.61

Finding the Fourth Proportional to 5,038.90, 7,550.64 and 2,115.61

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Solution

The fourth proportional to 5,038.90, 7,550.64 and 2,115.61 is: 3,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,038.90 : 7,550.64 = 2,115.61 : x
  2. Step 2: Convert to fraction form
    5,038.90/7,550.64 = 2,115.61/x
  3. Step 3: Cross multiply
    5,038.90x = 7,550.64 × 2,115.61
  4. Step 4: Simplify right side
    5,038.90x = 15,974,209.49
  5. Step 5: Solve for x
    x = 15,974,209.49/5,038.90
  6. Step 6: Final answer
    x = 3,170.18

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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.