Home / 5,515.88-7,612.08-3,125.80

Finding the Fourth Proportional to 5,515.88, 7,612.08 and 3,125.80

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Solution

The fourth proportional to 5,515.88, 7,612.08 and 3,125.80 is: 4,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.88 : 7,612.08 = 3,125.80 : x
  2. Step 2: Convert to fraction form
    5,515.88/7,612.08 = 3,125.80/x
  3. Step 3: Cross multiply
    5,515.88x = 7,612.08 × 3,125.80
  4. Step 4: Simplify right side
    5,515.88x = 23,793,839.66
  5. Step 5: Solve for x
    x = 23,793,839.66/5,515.88
  6. Step 6: Final answer
    x = 4,313.70

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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.