Home / 5,180.81-7,149.50-2,942.57

Finding the Fourth Proportional to 5,180.81, 7,149.50 and 2,942.57

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Solution

The fourth proportional to 5,180.81, 7,149.50 and 2,942.57 is: 4,060.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.81 : 7,149.50 = 2,942.57 : x
  2. Step 2: Convert to fraction form
    5,180.81/7,149.50 = 2,942.57/x
  3. Step 3: Cross multiply
    5,180.81x = 7,149.50 × 2,942.57
  4. Step 4: Simplify right side
    5,180.81x = 21,037,918.41
  5. Step 5: Solve for x
    x = 21,037,918.41/5,180.81
  6. Step 6: Final answer
    x = 4,060.74

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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.