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Finding the Fourth Proportional to 2,891.62, 4,337.60 and 783.56

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Solution

The fourth proportional to 2,891.62, 4,337.60 and 783.56 is: 1,175.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.62 : 4,337.60 = 783.56 : x
  2. Step 2: Convert to fraction form
    2,891.62/4,337.60 = 783.56/x
  3. Step 3: Cross multiply
    2,891.62x = 4,337.60 × 783.56
  4. Step 4: Simplify right side
    2,891.62x = 3,398,769.86
  5. Step 5: Solve for x
    x = 3,398,769.86/2,891.62
  6. Step 6: Final answer
    x = 1,175.39

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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.