Home / 2,130.65-3,195.97-669.92

Finding the Fourth Proportional to 2,130.65, 3,195.97 and 669.92

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Solution

The fourth proportional to 2,130.65, 3,195.97 and 669.92 is: 1,004.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.65 : 3,195.97 = 669.92 : x
  2. Step 2: Convert to fraction form
    2,130.65/3,195.97 = 669.92/x
  3. Step 3: Cross multiply
    2,130.65x = 3,195.97 × 669.92
  4. Step 4: Simplify right side
    2,130.65x = 2,141,026.57
  5. Step 5: Solve for x
    x = 2,141,026.57/2,130.65
  6. Step 6: Final answer
    x = 1,004.87

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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.