Home / 5,515.95-7,610.79-3,125.71

Finding the Fourth Proportional to 5,515.95, 7,610.79 and 3,125.71

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Solution

The fourth proportional to 5,515.95, 7,610.79 and 3,125.71 is: 4,312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.95 : 7,610.79 = 3,125.71 : x
  2. Step 2: Convert to fraction form
    5,515.95/7,610.79 = 3,125.71/x
  3. Step 3: Cross multiply
    5,515.95x = 7,610.79 × 3,125.71
  4. Step 4: Simplify right side
    5,515.95x = 23,789,138.68
  5. Step 5: Solve for x
    x = 23,789,138.68/5,515.95
  6. Step 6: Final answer
    x = 4,312.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.