Home / 2,790.22-4,186.14-842.71

Finding the Fourth Proportional to 2,790.22, 4,186.14 and 842.71

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Solution

The fourth proportional to 2,790.22, 4,186.14 and 842.71 is: 1,264.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.22 : 4,186.14 = 842.71 : x
  2. Step 2: Convert to fraction form
    2,790.22/4,186.14 = 842.71/x
  3. Step 3: Cross multiply
    2,790.22x = 4,186.14 × 842.71
  4. Step 4: Simplify right side
    2,790.22x = 3,527,702.04
  5. Step 5: Solve for x
    x = 3,527,702.04/2,790.22
  6. Step 6: Final answer
    x = 1,264.31

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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.