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Finding the Fourth Proportional to 1,908.04, 2,862.04 and 1,085.18

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Solution

The fourth proportional to 1,908.04, 2,862.04 and 1,085.18 is: 1,627.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.04 : 2,862.04 = 1,085.18 : x
  2. Step 2: Convert to fraction form
    1,908.04/2,862.04 = 1,085.18/x
  3. Step 3: Cross multiply
    1,908.04x = 2,862.04 × 1,085.18
  4. Step 4: Simplify right side
    1,908.04x = 3,105,828.57
  5. Step 5: Solve for x
    x = 3,105,828.57/1,908.04
  6. Step 6: Final answer
    x = 1,627.76

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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.