Home / 1,272.24-1,742.53-1,197.52

Finding the Fourth Proportional to 1,272.24, 1,742.53 and 1,197.52

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Solution

The fourth proportional to 1,272.24, 1,742.53 and 1,197.52 is: 1,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.24 : 1,742.53 = 1,197.52 : x
  2. Step 2: Convert to fraction form
    1,272.24/1,742.53 = 1,197.52/x
  3. Step 3: Cross multiply
    1,272.24x = 1,742.53 × 1,197.52
  4. Step 4: Simplify right side
    1,272.24x = 2,086,705.81
  5. Step 5: Solve for x
    x = 2,086,705.81/1,272.24
  6. Step 6: Final answer
    x = 1,640.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.