Home / 2,269.21-3,131.45-1,274.47

Finding the Fourth Proportional to 2,269.21, 3,131.45 and 1,274.47

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Solution

The fourth proportional to 2,269.21, 3,131.45 and 1,274.47 is: 1,758.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.21 : 3,131.45 = 1,274.47 : x
  2. Step 2: Convert to fraction form
    2,269.21/3,131.45 = 1,274.47/x
  3. Step 3: Cross multiply
    2,269.21x = 3,131.45 × 1,274.47
  4. Step 4: Simplify right side
    2,269.21x = 3,990,939.08
  5. Step 5: Solve for x
    x = 3,990,939.08/2,269.21
  6. Step 6: Final answer
    x = 1,758.74

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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.