Home / 2,210.39-3,315.67-729.65

Finding the Fourth Proportional to 2,210.39, 3,315.67 and 729.65

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Solution

The fourth proportional to 2,210.39, 3,315.67 and 729.65 is: 1,094.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.39 : 3,315.67 = 729.65 : x
  2. Step 2: Convert to fraction form
    2,210.39/3,315.67 = 729.65/x
  3. Step 3: Cross multiply
    2,210.39x = 3,315.67 × 729.65
  4. Step 4: Simplify right side
    2,210.39x = 2,419,287.82
  5. Step 5: Solve for x
    x = 2,419,287.82/2,210.39
  6. Step 6: Final answer
    x = 1,094.51

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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.