Home / 5,174.11-7,140.30-2,816.25

Finding the Fourth Proportional to 5,174.11, 7,140.30 and 2,816.25

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Solution

The fourth proportional to 5,174.11, 7,140.30 and 2,816.25 is: 3,886.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.11 : 7,140.30 = 2,816.25 : x
  2. Step 2: Convert to fraction form
    5,174.11/7,140.30 = 2,816.25/x
  3. Step 3: Cross multiply
    5,174.11x = 7,140.30 × 2,816.25
  4. Step 4: Simplify right side
    5,174.11x = 20,108,869.88
  5. Step 5: Solve for x
    x = 20,108,869.88/5,174.11
  6. Step 6: Final answer
    x = 3,886.44

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Half scale
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Double scale
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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.