Home / 5,121.06-7,680.66-1,423.53

Finding the Fourth Proportional to 5,121.06, 7,680.66 and 1,423.53

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Solution

The fourth proportional to 5,121.06, 7,680.66 and 1,423.53 is: 2,135.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.06 : 7,680.66 = 1,423.53 : x
  2. Step 2: Convert to fraction form
    5,121.06/7,680.66 = 1,423.53/x
  3. Step 3: Cross multiply
    5,121.06x = 7,680.66 × 1,423.53
  4. Step 4: Simplify right side
    5,121.06x = 10,933,649.93
  5. Step 5: Solve for x
    x = 10,933,649.93/5,121.06
  6. Step 6: Final answer
    x = 2,135.04

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1.5x scale

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.