Home / 2,640.20-3,643.48-1,461.28

Finding the Fourth Proportional to 2,640.20, 3,643.48 and 1,461.28

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Solution

The fourth proportional to 2,640.20, 3,643.48 and 1,461.28 is: 2,016.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.20 : 3,643.48 = 1,461.28 : x
  2. Step 2: Convert to fraction form
    2,640.20/3,643.48 = 1,461.28/x
  3. Step 3: Cross multiply
    2,640.20x = 3,643.48 × 1,461.28
  4. Step 4: Simplify right side
    2,640.20x = 5,324,144.45
  5. Step 5: Solve for x
    x = 5,324,144.45/2,640.20
  6. Step 6: Final answer
    x = 2,016.57

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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.