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Finding the Fourth Proportional to 2,841.12, 3,921.48 and 1,848.87

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Solution

The fourth proportional to 2,841.12, 3,921.48 and 1,848.87 is: 2,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.12 : 3,921.48 = 1,848.87 : x
  2. Step 2: Convert to fraction form
    2,841.12/3,921.48 = 1,848.87/x
  3. Step 3: Cross multiply
    2,841.12x = 3,921.48 × 1,848.87
  4. Step 4: Simplify right side
    2,841.12x = 7,250,306.73
  5. Step 5: Solve for x
    x = 7,250,306.73/2,841.12
  6. Step 6: Final answer
    x = 2,551.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.