Home / 1,686.90-2,325.26-1,266.65

Finding the Fourth Proportional to 1,686.90, 2,325.26 and 1,266.65

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Solution

The fourth proportional to 1,686.90, 2,325.26 and 1,266.65 is: 1,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.90 : 2,325.26 = 1,266.65 : x
  2. Step 2: Convert to fraction form
    1,686.90/2,325.26 = 1,266.65/x
  3. Step 3: Cross multiply
    1,686.90x = 2,325.26 × 1,266.65
  4. Step 4: Simplify right side
    1,686.90x = 2,945,278.95
  5. Step 5: Solve for x
    x = 2,945,278.95/1,686.90
  6. Step 6: Final answer
    x = 1,745.97

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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.