Home / 3,748.80-5,168.16-3,120.24

Finding the Fourth Proportional to 3,748.80, 5,168.16 and 3,120.24

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Solution

The fourth proportional to 3,748.80, 5,168.16 and 3,120.24 is: 4,301.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.80 : 5,168.16 = 3,120.24 : x
  2. Step 2: Convert to fraction form
    3,748.80/5,168.16 = 3,120.24/x
  3. Step 3: Cross multiply
    3,748.80x = 5,168.16 × 3,120.24
  4. Step 4: Simplify right side
    3,748.80x = 16,125,899.56
  5. Step 5: Solve for x
    x = 16,125,899.56/3,748.80
  6. Step 6: Final answer
    x = 4,301.62

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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.