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Finding the Fourth Proportional to 2,747.55, 4,120.80 and 898.11

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Solution

The fourth proportional to 2,747.55, 4,120.80 and 898.11 is: 1,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.55 : 4,120.80 = 898.11 : x
  2. Step 2: Convert to fraction form
    2,747.55/4,120.80 = 898.11/x
  3. Step 3: Cross multiply
    2,747.55x = 4,120.80 × 898.11
  4. Step 4: Simplify right side
    2,747.55x = 3,700,931.69
  5. Step 5: Solve for x
    x = 3,700,931.69/2,747.55
  6. Step 6: Final answer
    x = 1,346.99

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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.