Home / 1,726.11-2,588.76-685.67

Finding the Fourth Proportional to 1,726.11, 2,588.76 and 685.67

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Solution

The fourth proportional to 1,726.11, 2,588.76 and 685.67 is: 1,028.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.11 : 2,588.76 = 685.67 : x
  2. Step 2: Convert to fraction form
    1,726.11/2,588.76 = 685.67/x
  3. Step 3: Cross multiply
    1,726.11x = 2,588.76 × 685.67
  4. Step 4: Simplify right side
    1,726.11x = 1,775,022.13
  5. Step 5: Solve for x
    x = 1,775,022.13/1,726.11
  6. Step 6: Final answer
    x = 1,028.34

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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.