Home / 5,275.56-7,278.48-3,151.74

Finding the Fourth Proportional to 5,275.56, 7,278.48 and 3,151.74

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Solution

The fourth proportional to 5,275.56, 7,278.48 and 3,151.74 is: 4,348.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.56 : 7,278.48 = 3,151.74 : x
  2. Step 2: Convert to fraction form
    5,275.56/7,278.48 = 3,151.74/x
  3. Step 3: Cross multiply
    5,275.56x = 7,278.48 × 3,151.74
  4. Step 4: Simplify right side
    5,275.56x = 22,939,876.56
  5. Step 5: Solve for x
    x = 22,939,876.56/5,275.56
  6. Step 6: Final answer
    x = 4,348.33

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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.