Home / 2,635.17-3,949.69-990.66

Finding the Fourth Proportional to 2,635.17, 3,949.69 and 990.66

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Solution

The fourth proportional to 2,635.17, 3,949.69 and 990.66 is: 1,484.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.17 : 3,949.69 = 990.66 : x
  2. Step 2: Convert to fraction form
    2,635.17/3,949.69 = 990.66/x
  3. Step 3: Cross multiply
    2,635.17x = 3,949.69 × 990.66
  4. Step 4: Simplify right side
    2,635.17x = 3,912,799.90
  5. Step 5: Solve for x
    x = 3,912,799.90/2,635.17
  6. Step 6: Final answer
    x = 1,484.84

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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.