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Finding the Fourth Proportional to 2,891.78, 4,337.52 and 2,011.68

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Solution

The fourth proportional to 2,891.78, 4,337.52 and 2,011.68 is: 3,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.78 : 4,337.52 = 2,011.68 : x
  2. Step 2: Convert to fraction form
    2,891.78/4,337.52 = 2,011.68/x
  3. Step 3: Cross multiply
    2,891.78x = 4,337.52 × 2,011.68
  4. Step 4: Simplify right side
    2,891.78x = 8,725,702.23
  5. Step 5: Solve for x
    x = 8,725,702.23/2,891.78
  6. Step 6: Final answer
    x = 3,017.42

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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.