Home / 1,293.32-1,939.98-1,272.68

Finding the Fourth Proportional to 1,293.32, 1,939.98 and 1,272.68

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Solution

The fourth proportional to 1,293.32, 1,939.98 and 1,272.68 is: 1,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.32 : 1,939.98 = 1,272.68 : x
  2. Step 2: Convert to fraction form
    1,293.32/1,939.98 = 1,272.68/x
  3. Step 3: Cross multiply
    1,293.32x = 1,939.98 × 1,272.68
  4. Step 4: Simplify right side
    1,293.32x = 2,468,973.75
  5. Step 5: Solve for x
    x = 2,468,973.75/1,293.32
  6. Step 6: Final answer
    x = 1,909.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.