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Finding the Fourth Proportional to 1,734.17, 2,601.68 and 912.21

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Solution

The fourth proportional to 1,734.17, 2,601.68 and 912.21 is: 1,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,734.17 : 2,601.68 = 912.21 : x
  2. Step 2: Convert to fraction form
    1,734.17/2,601.68 = 912.21/x
  3. Step 3: Cross multiply
    1,734.17x = 2,601.68 × 912.21
  4. Step 4: Simplify right side
    1,734.17x = 2,373,273.95
  5. Step 5: Solve for x
    x = 2,373,273.95/1,734.17
  6. Step 6: Final answer
    x = 1,368.54

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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.