Home / 1,272.48-1,755.40-1,097.52

Finding the Fourth Proportional to 1,272.48, 1,755.40 and 1,097.52

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Solution

The fourth proportional to 1,272.48, 1,755.40 and 1,097.52 is: 1,514.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.48 : 1,755.40 = 1,097.52 : x
  2. Step 2: Convert to fraction form
    1,272.48/1,755.40 = 1,097.52/x
  3. Step 3: Cross multiply
    1,272.48x = 1,755.40 × 1,097.52
  4. Step 4: Simplify right side
    1,272.48x = 1,926,586.61
  5. Step 5: Solve for x
    x = 1,926,586.61/1,272.48
  6. Step 6: Final answer
    x = 1,514.04

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1.5x scale

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.