Home / 5,174.35-7,140.77-2,816.57

Finding the Fourth Proportional to 5,174.35, 7,140.77 and 2,816.57

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Solution

The fourth proportional to 5,174.35, 7,140.77 and 2,816.57 is: 3,886.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.35 : 7,140.77 = 2,816.57 : x
  2. Step 2: Convert to fraction form
    5,174.35/7,140.77 = 2,816.57/x
  3. Step 3: Cross multiply
    5,174.35x = 7,140.77 × 2,816.57
  4. Step 4: Simplify right side
    5,174.35x = 20,112,478.56
  5. Step 5: Solve for x
    x = 20,112,478.56/5,174.35
  6. Step 6: Final answer
    x = 3,886.96

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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.