Home / 1,330.80-1,998.54-1,151.16

Finding the Fourth Proportional to 1,330.80, 1,998.54 and 1,151.16

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Solution

The fourth proportional to 1,330.80, 1,998.54 and 1,151.16 is: 1,728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.80 : 1,998.54 = 1,151.16 : x
  2. Step 2: Convert to fraction form
    1,330.80/1,998.54 = 1,151.16/x
  3. Step 3: Cross multiply
    1,330.80x = 1,998.54 × 1,151.16
  4. Step 4: Simplify right side
    1,330.80x = 2,300,639.31
  5. Step 5: Solve for x
    x = 2,300,639.31/1,330.80
  6. Step 6: Final answer
    x = 1,728.76

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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.