Home / 2,130.98-3,195.56-743.90

Finding the Fourth Proportional to 2,130.98, 3,195.56 and 743.90

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Solution

The fourth proportional to 2,130.98, 3,195.56 and 743.90 is: 1,115.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.98 : 3,195.56 = 743.90 : x
  2. Step 2: Convert to fraction form
    2,130.98/3,195.56 = 743.90/x
  3. Step 3: Cross multiply
    2,130.98x = 3,195.56 × 743.90
  4. Step 4: Simplify right side
    2,130.98x = 2,377,173.36
  5. Step 5: Solve for x
    x = 2,377,173.36/2,130.98
  6. Step 6: Final answer
    x = 1,115.53

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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.