Home / 5,174.42-7,140.66-2,816.57

Finding the Fourth Proportional to 5,174.42, 7,140.66 and 2,816.57

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Solution

The fourth proportional to 5,174.42, 7,140.66 and 2,816.57 is: 3,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.42 : 7,140.66 = 2,816.57 : x
  2. Step 2: Convert to fraction form
    5,174.42/7,140.66 = 2,816.57/x
  3. Step 3: Cross multiply
    5,174.42x = 7,140.66 × 2,816.57
  4. Step 4: Simplify right side
    5,174.42x = 20,112,168.74
  5. Step 5: Solve for x
    x = 20,112,168.74/5,174.42
  6. Step 6: Final answer
    x = 3,886.85

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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.