Home / 5,417.85-8,120.91-2,641.38

Finding the Fourth Proportional to 5,417.85, 8,120.91 and 2,641.38

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Solution

The fourth proportional to 5,417.85, 8,120.91 and 2,641.38 is: 3,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.85 : 8,120.91 = 2,641.38 : x
  2. Step 2: Convert to fraction form
    5,417.85/8,120.91 = 2,641.38/x
  3. Step 3: Cross multiply
    5,417.85x = 8,120.91 × 2,641.38
  4. Step 4: Simplify right side
    5,417.85x = 21,450,409.26
  5. Step 5: Solve for x
    x = 21,450,409.26/5,417.85
  6. Step 6: Final answer
    x = 3,959.21

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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.