Home / 5,174.55-7,140.38-2,905.37

Finding the Fourth Proportional to 5,174.55, 7,140.38 and 2,905.37

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Solution

The fourth proportional to 5,174.55, 7,140.38 and 2,905.37 is: 4,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.55 : 7,140.38 = 2,905.37 : x
  2. Step 2: Convert to fraction form
    5,174.55/7,140.38 = 2,905.37/x
  3. Step 3: Cross multiply
    5,174.55x = 7,140.38 × 2,905.37
  4. Step 4: Simplify right side
    5,174.55x = 20,745,422.39
  5. Step 5: Solve for x
    x = 20,745,422.39/5,174.55
  6. Step 6: Final answer
    x = 4,009.13

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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.