Home / 3,956.22-5,460.35-2,278.76

Finding the Fourth Proportional to 3,956.22, 5,460.35 and 2,278.76

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Solution

The fourth proportional to 3,956.22, 5,460.35 and 2,278.76 is: 3,145.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.22 : 5,460.35 = 2,278.76 : x
  2. Step 2: Convert to fraction form
    3,956.22/5,460.35 = 2,278.76/x
  3. Step 3: Cross multiply
    3,956.22x = 5,460.35 × 2,278.76
  4. Step 4: Simplify right side
    3,956.22x = 12,442,788.47
  5. Step 5: Solve for x
    x = 12,442,788.47/3,956.22
  6. Step 6: Final answer
    x = 3,145.12

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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.