Home / 5,169.90-7,134.49-2,812.06

Finding the Fourth Proportional to 5,169.90, 7,134.49 and 2,812.06

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Solution

The fourth proportional to 5,169.90, 7,134.49 and 2,812.06 is: 3,880.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.90 : 7,134.49 = 2,812.06 : x
  2. Step 2: Convert to fraction form
    5,169.90/7,134.49 = 2,812.06/x
  3. Step 3: Cross multiply
    5,169.90x = 7,134.49 × 2,812.06
  4. Step 4: Simplify right side
    5,169.90x = 20,062,613.95
  5. Step 5: Solve for x
    x = 20,062,613.95/5,169.90
  6. Step 6: Final answer
    x = 3,880.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.