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Finding the Fourth Proportional to 2,654.80, 3,979.40 and 898.25

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Solution

The fourth proportional to 2,654.80, 3,979.40 and 898.25 is: 1,346.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,654.80 : 3,979.40 = 898.25 : x
  2. Step 2: Convert to fraction form
    2,654.80/3,979.40 = 898.25/x
  3. Step 3: Cross multiply
    2,654.80x = 3,979.40 × 898.25
  4. Step 4: Simplify right side
    2,654.80x = 3,574,471.66
  5. Step 5: Solve for x
    x = 3,574,471.66/2,654.80
  6. Step 6: Final answer
    x = 1,346.42

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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.