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Finding the Fourth Proportional to 1,948.33, 2,922.49 and 487.49

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Solution

The fourth proportional to 1,948.33, 2,922.49 and 487.49 is: 731.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.33 : 2,922.49 = 487.49 : x
  2. Step 2: Convert to fraction form
    1,948.33/2,922.49 = 487.49/x
  3. Step 3: Cross multiply
    1,948.33x = 2,922.49 × 487.49
  4. Step 4: Simplify right side
    1,948.33x = 1,424,684.65
  5. Step 5: Solve for x
    x = 1,424,684.65/1,948.33
  6. Step 6: Final answer
    x = 731.23

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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.