Home / 5,174.64-7,140.80-2,816.73

Finding the Fourth Proportional to 5,174.64, 7,140.80 and 2,816.73

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Solution

The fourth proportional to 5,174.64, 7,140.80 and 2,816.73 is: 3,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.64 : 7,140.80 = 2,816.73 : x
  2. Step 2: Convert to fraction form
    5,174.64/7,140.80 = 2,816.73/x
  3. Step 3: Cross multiply
    5,174.64x = 7,140.80 × 2,816.73
  4. Step 4: Simplify right side
    5,174.64x = 20,113,691.50
  5. Step 5: Solve for x
    x = 20,113,691.50/5,174.64
  6. Step 6: Final answer
    x = 3,886.97

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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.