Home / 3,956.86-5,461.52-2,278.45

Finding the Fourth Proportional to 3,956.86, 5,461.52 and 2,278.45

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Solution

The fourth proportional to 3,956.86, 5,461.52 and 2,278.45 is: 3,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.86 : 5,461.52 = 2,278.45 : x
  2. Step 2: Convert to fraction form
    3,956.86/5,461.52 = 2,278.45/x
  3. Step 3: Cross multiply
    3,956.86x = 5,461.52 × 2,278.45
  4. Step 4: Simplify right side
    3,956.86x = 12,443,800.24
  5. Step 5: Solve for x
    x = 12,443,800.24/3,956.86
  6. Step 6: Final answer
    x = 3,144.87

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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.