Home / 1,721.28-2,581.71-551.41

Finding the Fourth Proportional to 1,721.28, 2,581.71 and 551.41

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Solution

The fourth proportional to 1,721.28, 2,581.71 and 551.41 is: 827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.28 : 2,581.71 = 551.41 : x
  2. Step 2: Convert to fraction form
    1,721.28/2,581.71 = 551.41/x
  3. Step 3: Cross multiply
    1,721.28x = 2,581.71 × 551.41
  4. Step 4: Simplify right side
    1,721.28x = 1,423,580.71
  5. Step 5: Solve for x
    x = 1,423,580.71/1,721.28
  6. Step 6: Final answer
    x = 827.05

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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.