Home / 3,087.15-4,631.19-1,139.19

Finding the Fourth Proportional to 3,087.15, 4,631.19 and 1,139.19

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Solution

The fourth proportional to 3,087.15, 4,631.19 and 1,139.19 is: 1,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.15 : 4,631.19 = 1,139.19 : x
  2. Step 2: Convert to fraction form
    3,087.15/4,631.19 = 1,139.19/x
  3. Step 3: Cross multiply
    3,087.15x = 4,631.19 × 1,139.19
  4. Step 4: Simplify right side
    3,087.15x = 5,275,805.34
  5. Step 5: Solve for x
    x = 5,275,805.34/3,087.15
  6. Step 6: Final answer
    x = 1,708.96

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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.