Home / 2,451.15-3,677.00-990.45

Finding the Fourth Proportional to 2,451.15, 3,677.00 and 990.45

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Solution

The fourth proportional to 2,451.15, 3,677.00 and 990.45 is: 1,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.15 : 3,677.00 = 990.45 : x
  2. Step 2: Convert to fraction form
    2,451.15/3,677.00 = 990.45/x
  3. Step 3: Cross multiply
    2,451.15x = 3,677.00 × 990.45
  4. Step 4: Simplify right side
    2,451.15x = 3,641,879.70
  5. Step 5: Solve for x
    x = 3,641,879.70/2,451.15
  6. Step 6: Final answer
    x = 1,485.78

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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.