Home / 2,391.19-3,587.37-830.97

Finding the Fourth Proportional to 2,391.19, 3,587.37 and 830.97

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Solution

The fourth proportional to 2,391.19, 3,587.37 and 830.97 is: 1,246.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.19 : 3,587.37 = 830.97 : x
  2. Step 2: Convert to fraction form
    2,391.19/3,587.37 = 830.97/x
  3. Step 3: Cross multiply
    2,391.19x = 3,587.37 × 830.97
  4. Step 4: Simplify right side
    2,391.19x = 2,980,989.25
  5. Step 5: Solve for x
    x = 2,980,989.25/2,391.19
  6. Step 6: Final answer
    x = 1,246.65

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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.