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Finding the Fourth Proportional to 2,748.09, 4,122.87 and 898.95

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Solution

The fourth proportional to 2,748.09, 4,122.87 and 898.95 is: 1,348.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.09 : 4,122.87 = 898.95 : x
  2. Step 2: Convert to fraction form
    2,748.09/4,122.87 = 898.95/x
  3. Step 3: Cross multiply
    2,748.09x = 4,122.87 × 898.95
  4. Step 4: Simplify right side
    2,748.09x = 3,706,253.99
  5. Step 5: Solve for x
    x = 3,706,253.99/2,748.09
  6. Step 6: Final answer
    x = 1,348.67

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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.