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Finding the Fourth Proportional to 2,956.05, 4,431.08 and 1,916.71

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Solution

The fourth proportional to 2,956.05, 4,431.08 and 1,916.71 is: 2,873.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.05 : 4,431.08 = 1,916.71 : x
  2. Step 2: Convert to fraction form
    2,956.05/4,431.08 = 1,916.71/x
  3. Step 3: Cross multiply
    2,956.05x = 4,431.08 × 1,916.71
  4. Step 4: Simplify right side
    2,956.05x = 8,493,092.95
  5. Step 5: Solve for x
    x = 8,493,092.95/2,956.05
  6. Step 6: Final answer
    x = 2,873.12

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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.