Home / 1,727.75-2,384.37-981.71

Finding the Fourth Proportional to 1,727.75, 2,384.37 and 981.71

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Solution

The fourth proportional to 1,727.75, 2,384.37 and 981.71 is: 1,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.75 : 2,384.37 = 981.71 : x
  2. Step 2: Convert to fraction form
    1,727.75/2,384.37 = 981.71/x
  3. Step 3: Cross multiply
    1,727.75x = 2,384.37 × 981.71
  4. Step 4: Simplify right side
    1,727.75x = 2,340,759.87
  5. Step 5: Solve for x
    x = 2,340,759.87/1,727.75
  6. Step 6: Final answer
    x = 1,354.80

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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.