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Finding the Fourth Proportional to 1,908.96, 2,863.68 and 934.56

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Solution

The fourth proportional to 1,908.96, 2,863.68 and 934.56 is: 1,401.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.96 : 2,863.68 = 934.56 : x
  2. Step 2: Convert to fraction form
    1,908.96/2,863.68 = 934.56/x
  3. Step 3: Cross multiply
    1,908.96x = 2,863.68 × 934.56
  4. Step 4: Simplify right side
    1,908.96x = 2,676,280.78
  5. Step 5: Solve for x
    x = 2,676,280.78/1,908.96
  6. Step 6: Final answer
    x = 1,401.96

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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.