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Finding the Fourth Proportional to 1,716.57, 2,574.52 and 838.18

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Solution

The fourth proportional to 1,716.57, 2,574.52 and 838.18 is: 1,257.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,716.57 : 2,574.52 = 838.18 : x
  2. Step 2: Convert to fraction form
    1,716.57/2,574.52 = 838.18/x
  3. Step 3: Cross multiply
    1,716.57x = 2,574.52 × 838.18
  4. Step 4: Simplify right side
    1,716.57x = 2,157,911.17
  5. Step 5: Solve for x
    x = 2,157,911.17/1,716.57
  6. Step 6: Final answer
    x = 1,257.11

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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.