Home / 2,130.15-3,195.80-743.57

Finding the Fourth Proportional to 2,130.15, 3,195.80 and 743.57

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Solution

The fourth proportional to 2,130.15, 3,195.80 and 743.57 is: 1,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.15 : 3,195.80 = 743.57 : x
  2. Step 2: Convert to fraction form
    2,130.15/3,195.80 = 743.57/x
  3. Step 3: Cross multiply
    2,130.15x = 3,195.80 × 743.57
  4. Step 4: Simplify right side
    2,130.15x = 2,376,301.01
  5. Step 5: Solve for x
    x = 2,376,301.01/2,130.15
  6. Step 6: Final answer
    x = 1,115.56

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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.