Home / 3,996.40-5,995.56-1,531.20

Finding the Fourth Proportional to 3,996.40, 5,995.56 and 1,531.20

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Solution

The fourth proportional to 3,996.40, 5,995.56 and 1,531.20 is: 2,297.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.40 : 5,995.56 = 1,531.20 : x
  2. Step 2: Convert to fraction form
    3,996.40/5,995.56 = 1,531.20/x
  3. Step 3: Cross multiply
    3,996.40x = 5,995.56 × 1,531.20
  4. Step 4: Simplify right side
    3,996.40x = 9,180,401.47
  5. Step 5: Solve for x
    x = 9,180,401.47/3,996.40
  6. Step 6: Final answer
    x = 2,297.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.