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Finding the Fourth Proportional to 2,934.78, 4,402.38 and 854.80

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Solution

The fourth proportional to 2,934.78, 4,402.38 and 854.80 is: 1,282.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,934.78 : 4,402.38 = 854.80 : x
  2. Step 2: Convert to fraction form
    2,934.78/4,402.38 = 854.80/x
  3. Step 3: Cross multiply
    2,934.78x = 4,402.38 × 854.80
  4. Step 4: Simplify right side
    2,934.78x = 3,763,154.42
  5. Step 5: Solve for x
    x = 3,763,154.42/2,934.78
  6. Step 6: Final answer
    x = 1,282.26

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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.