Home / 1,272.36-1,740.25-1,252.20

Finding the Fourth Proportional to 1,272.36, 1,740.25 and 1,252.20

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Solution

The fourth proportional to 1,272.36, 1,740.25 and 1,252.20 is: 1,712.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.36 : 1,740.25 = 1,252.20 : x
  2. Step 2: Convert to fraction form
    1,272.36/1,740.25 = 1,252.20/x
  3. Step 3: Cross multiply
    1,272.36x = 1,740.25 × 1,252.20
  4. Step 4: Simplify right side
    1,272.36x = 2,179,141.05
  5. Step 5: Solve for x
    x = 2,179,141.05/1,272.36
  6. Step 6: Final answer
    x = 1,712.68

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1.5x scale

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.