Home / 5,151.76-7,109.35-2,793.88

Finding the Fourth Proportional to 5,151.76, 7,109.35 and 2,793.88

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Solution

The fourth proportional to 5,151.76, 7,109.35 and 2,793.88 is: 3,855.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.76 : 7,109.35 = 2,793.88 : x
  2. Step 2: Convert to fraction form
    5,151.76/7,109.35 = 2,793.88/x
  3. Step 3: Cross multiply
    5,151.76x = 7,109.35 × 2,793.88
  4. Step 4: Simplify right side
    5,151.76x = 19,862,670.78
  5. Step 5: Solve for x
    x = 19,862,670.78/5,151.76
  6. Step 6: Final answer
    x = 3,855.51

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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.