Home / 5,131.70-7,080.44-3,141.53

Finding the Fourth Proportional to 5,131.70, 7,080.44 and 3,141.53

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Solution

The fourth proportional to 5,131.70, 7,080.44 and 3,141.53 is: 4,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.70 : 7,080.44 = 3,141.53 : x
  2. Step 2: Convert to fraction form
    5,131.70/7,080.44 = 3,141.53/x
  3. Step 3: Cross multiply
    5,131.70x = 7,080.44 × 3,141.53
  4. Step 4: Simplify right side
    5,131.70x = 22,243,363.56
  5. Step 5: Solve for x
    x = 22,243,363.56/5,131.70
  6. Step 6: Final answer
    x = 4,334.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.