Home / 5,161.38-7,122.70-2,803.57

Finding the Fourth Proportional to 5,161.38, 7,122.70 and 2,803.57

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Solution

The fourth proportional to 5,161.38, 7,122.70 and 2,803.57 is: 3,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.38 : 7,122.70 = 2,803.57 : x
  2. Step 2: Convert to fraction form
    5,161.38/7,122.70 = 2,803.57/x
  3. Step 3: Cross multiply
    5,161.38x = 7,122.70 × 2,803.57
  4. Step 4: Simplify right side
    5,161.38x = 19,968,988.04
  5. Step 5: Solve for x
    x = 19,968,988.04/5,161.38
  6. Step 6: Final answer
    x = 3,868.92

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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.