Home / 1,721.21-2,581.02-550.98

Finding the Fourth Proportional to 1,721.21, 2,581.02 and 550.98

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Solution

The fourth proportional to 1,721.21, 2,581.02 and 550.98 is: 826.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.21 : 2,581.02 = 550.98 : x
  2. Step 2: Convert to fraction form
    1,721.21/2,581.02 = 550.98/x
  3. Step 3: Cross multiply
    1,721.21x = 2,581.02 × 550.98
  4. Step 4: Simplify right side
    1,721.21x = 1,422,090.40
  5. Step 5: Solve for x
    x = 1,422,090.40/1,721.21
  6. Step 6: Final answer
    x = 826.22

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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.