Home / 1,424.12-1,966.18-1,091.92

Finding the Fourth Proportional to 1,424.12, 1,966.18 and 1,091.92

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Solution

The fourth proportional to 1,424.12, 1,966.18 and 1,091.92 is: 1,507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.12 : 1,966.18 = 1,091.92 : x
  2. Step 2: Convert to fraction form
    1,424.12/1,966.18 = 1,091.92/x
  3. Step 3: Cross multiply
    1,424.12x = 1,966.18 × 1,091.92
  4. Step 4: Simplify right side
    1,424.12x = 2,146,911.27
  5. Step 5: Solve for x
    x = 2,146,911.27/1,424.12
  6. Step 6: Final answer
    x = 1,507.54

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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.