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Finding the Fourth Proportional to 2,934.14, 4,400.54 and 853.69

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Solution

The fourth proportional to 2,934.14, 4,400.54 and 853.69 is: 1,280.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,934.14 : 4,400.54 = 853.69 : x
  2. Step 2: Convert to fraction form
    2,934.14/4,400.54 = 853.69/x
  3. Step 3: Cross multiply
    2,934.14x = 4,400.54 × 853.69
  4. Step 4: Simplify right side
    2,934.14x = 3,756,697.98
  5. Step 5: Solve for x
    x = 3,756,697.98/2,934.14
  6. Step 6: Final answer
    x = 1,280.34

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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.