Home / 2,329.65-3,215.07-1,281.78

Finding the Fourth Proportional to 2,329.65, 3,215.07 and 1,281.78

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Solution

The fourth proportional to 2,329.65, 3,215.07 and 1,281.78 is: 1,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.65 : 3,215.07 = 1,281.78 : x
  2. Step 2: Convert to fraction form
    2,329.65/3,215.07 = 1,281.78/x
  3. Step 3: Cross multiply
    2,329.65x = 3,215.07 × 1,281.78
  4. Step 4: Simplify right side
    2,329.65x = 4,121,012.42
  5. Step 5: Solve for x
    x = 4,121,012.42/2,329.65
  6. Step 6: Final answer
    x = 1,768.94

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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.