Home / 5,121.69-7,685.51-2,159.95

Finding the Fourth Proportional to 5,121.69, 7,685.51 and 2,159.95

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Solution

The fourth proportional to 5,121.69, 7,685.51 and 2,159.95 is: 3,241.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.69 : 7,685.51 = 2,159.95 : x
  2. Step 2: Convert to fraction form
    5,121.69/7,685.51 = 2,159.95/x
  3. Step 3: Cross multiply
    5,121.69x = 7,685.51 × 2,159.95
  4. Step 4: Simplify right side
    5,121.69x = 16,600,278.90
  5. Step 5: Solve for x
    x = 16,600,278.90/5,121.69
  6. Step 6: Final answer
    x = 3,241.18

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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.