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Finding the Fourth Proportional to 1,948.57, 2,921.90 and 908.33

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Solution

The fourth proportional to 1,948.57, 2,921.90 and 908.33 is: 1,362.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.57 : 2,921.90 = 908.33 : x
  2. Step 2: Convert to fraction form
    1,948.57/2,921.90 = 908.33/x
  3. Step 3: Cross multiply
    1,948.57x = 2,921.90 × 908.33
  4. Step 4: Simplify right side
    1,948.57x = 2,654,030.28
  5. Step 5: Solve for x
    x = 2,654,030.28/1,948.57
  6. Step 6: Final answer
    x = 1,362.04

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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.