Home / 5,411.04-8,116.54-2,121.82

Finding the Fourth Proportional to 5,411.04, 8,116.54 and 2,121.82

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Solution

The fourth proportional to 5,411.04, 8,116.54 and 2,121.82 is: 3,182.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.04 : 8,116.54 = 2,121.82 : x
  2. Step 2: Convert to fraction form
    5,411.04/8,116.54 = 2,121.82/x
  3. Step 3: Cross multiply
    5,411.04x = 8,116.54 × 2,121.82
  4. Step 4: Simplify right side
    5,411.04x = 17,221,836.90
  5. Step 5: Solve for x
    x = 17,221,836.90/5,411.04
  6. Step 6: Final answer
    x = 3,182.72

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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.