Home / 1,441.87-2,160.78-824.65

Finding the Fourth Proportional to 1,441.87, 2,160.78 and 824.65

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Solution

The fourth proportional to 1,441.87, 2,160.78 and 824.65 is: 1,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.87 : 2,160.78 = 824.65 : x
  2. Step 2: Convert to fraction form
    1,441.87/2,160.78 = 824.65/x
  3. Step 3: Cross multiply
    1,441.87x = 2,160.78 × 824.65
  4. Step 4: Simplify right side
    1,441.87x = 1,781,887.23
  5. Step 5: Solve for x
    x = 1,781,887.23/1,441.87
  6. Step 6: Final answer
    x = 1,235.82

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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.