Home / 2,235.30-3,351.68-918.68

Finding the Fourth Proportional to 2,235.30, 3,351.68 and 918.68

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Solution

The fourth proportional to 2,235.30, 3,351.68 and 918.68 is: 1,377.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.30 : 3,351.68 = 918.68 : x
  2. Step 2: Convert to fraction form
    2,235.30/3,351.68 = 918.68/x
  3. Step 3: Cross multiply
    2,235.30x = 3,351.68 × 918.68
  4. Step 4: Simplify right side
    2,235.30x = 3,079,121.38
  5. Step 5: Solve for x
    x = 3,079,121.38/2,235.30
  6. Step 6: Final answer
    x = 1,377.50

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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.