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Finding the Fourth Proportional to 1,892.87, 2,612.18 and 1,053.68

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Solution

The fourth proportional to 1,892.87, 2,612.18 and 1,053.68 is: 1,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.87 : 2,612.18 = 1,053.68 : x
  2. Step 2: Convert to fraction form
    1,892.87/2,612.18 = 1,053.68/x
  3. Step 3: Cross multiply
    1,892.87x = 2,612.18 × 1,053.68
  4. Step 4: Simplify right side
    1,892.87x = 2,752,391.40
  5. Step 5: Solve for x
    x = 2,752,391.40/1,892.87
  6. Step 6: Final answer
    x = 1,454.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.