Home / 2,531.20-3,485.28-2,272

Finding the Fourth Proportional to 2,531.20, 3,485.28 and 2,272

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Solution

The fourth proportional to 2,531.20, 3,485.28 and 2,272 is: 3,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531.20 : 3,485.28 = 2,272 : x
  2. Step 2: Convert to fraction form
    2,531.20/3,485.28 = 2,272/x
  3. Step 3: Cross multiply
    2,531.20x = 3,485.28 × 2,272
  4. Step 4: Simplify right side
    2,531.20x = 7,918,556.16
  5. Step 5: Solve for x
    x = 7,918,556.16/2,531.20
  6. Step 6: Final answer
    x = 3,128.38

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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.