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Finding the Fourth Proportional to 2,956.40, 4,445.40 and 2,481.20

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Solution

The fourth proportional to 2,956.40, 4,445.40 and 2,481.20 is: 3,730.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.40 : 4,445.40 = 2,481.20 : x
  2. Step 2: Convert to fraction form
    2,956.40/4,445.40 = 2,481.20/x
  3. Step 3: Cross multiply
    2,956.40x = 4,445.40 × 2,481.20
  4. Step 4: Simplify right side
    2,956.40x = 11,029,926.48
  5. Step 5: Solve for x
    x = 11,029,926.48/2,956.40
  6. Step 6: Final answer
    x = 3,730.86

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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.