Home / 2,269.15-3,131.35-1,274.47

Finding the Fourth Proportional to 2,269.15, 3,131.35 and 1,274.47

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Solution

The fourth proportional to 2,269.15, 3,131.35 and 1,274.47 is: 1,758.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.15 : 3,131.35 = 1,274.47 : x
  2. Step 2: Convert to fraction form
    2,269.15/3,131.35 = 1,274.47/x
  3. Step 3: Cross multiply
    2,269.15x = 3,131.35 × 1,274.47
  4. Step 4: Simplify right side
    2,269.15x = 3,990,805.26
  5. Step 5: Solve for x
    x = 3,990,805.26/2,269.15
  6. Step 6: Final answer
    x = 1,758.72

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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.