Home / 1,684.99-2,324.80-1,087.75

Finding the Fourth Proportional to 1,684.99, 2,324.80 and 1,087.75

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Solution

The fourth proportional to 1,684.99, 2,324.80 and 1,087.75 is: 1,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.99 : 2,324.80 = 1,087.75 : x
  2. Step 2: Convert to fraction form
    1,684.99/2,324.80 = 1,087.75/x
  3. Step 3: Cross multiply
    1,684.99x = 2,324.80 × 1,087.75
  4. Step 4: Simplify right side
    1,684.99x = 2,528,801.20
  5. Step 5: Solve for x
    x = 2,528,801.20/1,684.99
  6. Step 6: Final answer
    x = 1,500.78

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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.