Home / 2,270.43-3,131.66-1,384.70

Finding the Fourth Proportional to 2,270.43, 3,131.66 and 1,384.70

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Solution

The fourth proportional to 2,270.43, 3,131.66 and 1,384.70 is: 1,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.43 : 3,131.66 = 1,384.70 : x
  2. Step 2: Convert to fraction form
    2,270.43/3,131.66 = 1,384.70/x
  3. Step 3: Cross multiply
    2,270.43x = 3,131.66 × 1,384.70
  4. Step 4: Simplify right side
    2,270.43x = 4,336,397.41
  5. Step 5: Solve for x
    x = 4,336,397.41/2,270.43
  6. Step 6: Final answer
    x = 1,909.95

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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.