Home / 2,689.07-3,725.86-2,630.75

Finding the Fourth Proportional to 2,689.07, 3,725.86 and 2,630.75

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Solution

The fourth proportional to 2,689.07, 3,725.86 and 2,630.75 is: 3,645.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.07 : 3,725.86 = 2,630.75 : x
  2. Step 2: Convert to fraction form
    2,689.07/3,725.86 = 2,630.75/x
  3. Step 3: Cross multiply
    2,689.07x = 3,725.86 × 2,630.75
  4. Step 4: Simplify right side
    2,689.07x = 9,801,806.20
  5. Step 5: Solve for x
    x = 9,801,806.20/2,689.07
  6. Step 6: Final answer
    x = 3,645.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.