Home / 2,986.11-4,478.45-1,137.15

Finding the Fourth Proportional to 2,986.11, 4,478.45 and 1,137.15

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Solution

The fourth proportional to 2,986.11, 4,478.45 and 1,137.15 is: 1,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.11 : 4,478.45 = 1,137.15 : x
  2. Step 2: Convert to fraction form
    2,986.11/4,478.45 = 1,137.15/x
  3. Step 3: Cross multiply
    2,986.11x = 4,478.45 × 1,137.15
  4. Step 4: Simplify right side
    2,986.11x = 5,092,663.73
  5. Step 5: Solve for x
    x = 5,092,663.73/2,986.11
  6. Step 6: Final answer
    x = 1,705.45

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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.