Home / 1,689.68-2,532.08-1,256.33

Finding the Fourth Proportional to 1,689.68, 2,532.08 and 1,256.33

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Solution

The fourth proportional to 1,689.68, 2,532.08 and 1,256.33 is: 1,882.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.68 : 2,532.08 = 1,256.33 : x
  2. Step 2: Convert to fraction form
    1,689.68/2,532.08 = 1,256.33/x
  3. Step 3: Cross multiply
    1,689.68x = 2,532.08 × 1,256.33
  4. Step 4: Simplify right side
    1,689.68x = 3,181,109.12
  5. Step 5: Solve for x
    x = 3,181,109.12/1,689.68
  6. Step 6: Final answer
    x = 1,882.68

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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.