Home / 5,161.40-7,122.72-2,803.52

Finding the Fourth Proportional to 5,161.40, 7,122.72 and 2,803.52

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Solution

The fourth proportional to 5,161.40, 7,122.72 and 2,803.52 is: 3,868.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.40 : 7,122.72 = 2,803.52 : x
  2. Step 2: Convert to fraction form
    5,161.40/7,122.72 = 2,803.52/x
  3. Step 3: Cross multiply
    5,161.40x = 7,122.72 × 2,803.52
  4. Step 4: Simplify right side
    5,161.40x = 19,968,687.97
  5. Step 5: Solve for x
    x = 19,968,687.97/5,161.40
  6. Step 6: Final answer
    x = 3,868.85

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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.