Home / 1,721.10-2,581.57-551.05

Finding the Fourth Proportional to 1,721.10, 2,581.57 and 551.05

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Solution

The fourth proportional to 1,721.10, 2,581.57 and 551.05 is: 826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.10 : 2,581.57 = 551.05 : x
  2. Step 2: Convert to fraction form
    1,721.10/2,581.57 = 551.05/x
  3. Step 3: Cross multiply
    1,721.10x = 2,581.57 × 551.05
  4. Step 4: Simplify right side
    1,721.10x = 1,422,574.15
  5. Step 5: Solve for x
    x = 1,422,574.15/1,721.10
  6. Step 6: Final answer
    x = 826.55

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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.