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Finding the Fourth Proportional to 1,329.73, 1,834.89 and 1,015.20

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Solution

The fourth proportional to 1,329.73, 1,834.89 and 1,015.20 is: 1,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.73 : 1,834.89 = 1,015.20 : x
  2. Step 2: Convert to fraction form
    1,329.73/1,834.89 = 1,015.20/x
  3. Step 3: Cross multiply
    1,329.73x = 1,834.89 × 1,015.20
  4. Step 4: Simplify right side
    1,329.73x = 1,862,780.33
  5. Step 5: Solve for x
    x = 1,862,780.33/1,329.73
  6. Step 6: Final answer
    x = 1,400.87

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1.5x scale

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.