Home / 2,720.28-3,751.72-1,725.20

Finding the Fourth Proportional to 2,720.28, 3,751.72 and 1,725.20

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Solution

The fourth proportional to 2,720.28, 3,751.72 and 1,725.20 is: 2,379.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.28 : 3,751.72 = 1,725.20 : x
  2. Step 2: Convert to fraction form
    2,720.28/3,751.72 = 1,725.20/x
  3. Step 3: Cross multiply
    2,720.28x = 3,751.72 × 1,725.20
  4. Step 4: Simplify right side
    2,720.28x = 6,472,458.34
  5. Step 5: Solve for x
    x = 6,472,458.34/2,720.28
  6. Step 6: Final answer
    x = 2,379.33

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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.