Home / 1,686.88-2,526.27-1,318.60

Finding the Fourth Proportional to 1,686.88, 2,526.27 and 1,318.60

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Solution

The fourth proportional to 1,686.88, 2,526.27 and 1,318.60 is: 1,974.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.88 : 2,526.27 = 1,318.60 : x
  2. Step 2: Convert to fraction form
    1,686.88/2,526.27 = 1,318.60/x
  3. Step 3: Cross multiply
    1,686.88x = 2,526.27 × 1,318.60
  4. Step 4: Simplify right side
    1,686.88x = 3,331,139.62
  5. Step 5: Solve for x
    x = 3,331,139.62/1,686.88
  6. Step 6: Final answer
    x = 1,974.73

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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.