Home / 3,640.24-5,460.72-1,331.20

Finding the Fourth Proportional to 3,640.24, 5,460.72 and 1,331.20

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Solution

The fourth proportional to 3,640.24, 5,460.72 and 1,331.20 is: 1,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.24 : 5,460.72 = 1,331.20 : x
  2. Step 2: Convert to fraction form
    3,640.24/5,460.72 = 1,331.20/x
  3. Step 3: Cross multiply
    3,640.24x = 5,460.72 × 1,331.20
  4. Step 4: Simplify right side
    3,640.24x = 7,269,310.46
  5. Step 5: Solve for x
    x = 7,269,310.46/3,640.24
  6. Step 6: Final answer
    x = 1,996.93

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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.