Home / 5,517.25-8,312.69-4,990.76

Finding the Fourth Proportional to 5,517.25, 8,312.69 and 4,990.76

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Solution

The fourth proportional to 5,517.25, 8,312.69 and 4,990.76 is: 7,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.25 : 8,312.69 = 4,990.76 : x
  2. Step 2: Convert to fraction form
    5,517.25/8,312.69 = 4,990.76/x
  3. Step 3: Cross multiply
    5,517.25x = 8,312.69 × 4,990.76
  4. Step 4: Simplify right side
    5,517.25x = 41,486,640.74
  5. Step 5: Solve for x
    x = 41,486,640.74/5,517.25
  6. Step 6: Final answer
    x = 7,519.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.