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Finding the Fourth Proportional to 2,747.12, 4,120.13 and 898.43

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Solution

The fourth proportional to 2,747.12, 4,120.13 and 898.43 is: 1,347.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.12 : 4,120.13 = 898.43 : x
  2. Step 2: Convert to fraction form
    2,747.12/4,120.13 = 898.43/x
  3. Step 3: Cross multiply
    2,747.12x = 4,120.13 × 898.43
  4. Step 4: Simplify right side
    2,747.12x = 3,701,630.04
  5. Step 5: Solve for x
    x = 3,701,630.04/2,747.12
  6. Step 6: Final answer
    x = 1,347.46

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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.