Home / 3,900.32-5,375.40-3,237.20

Finding the Fourth Proportional to 3,900.32, 5,375.40 and 3,237.20

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Solution

The fourth proportional to 3,900.32, 5,375.40 and 3,237.20 is: 4,461.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.32 : 5,375.40 = 3,237.20 : x
  2. Step 2: Convert to fraction form
    3,900.32/5,375.40 = 3,237.20/x
  3. Step 3: Cross multiply
    3,900.32x = 5,375.40 × 3,237.20
  4. Step 4: Simplify right side
    3,900.32x = 17,401,244.88
  5. Step 5: Solve for x
    x = 17,401,244.88/3,900.32
  6. Step 6: Final answer
    x = 4,461.49

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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.