Home / 2,672.92-3,689.66-1,788.40

Finding the Fourth Proportional to 2,672.92, 3,689.66 and 1,788.40

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Solution

The fourth proportional to 2,672.92, 3,689.66 and 1,788.40 is: 2,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.92 : 3,689.66 = 1,788.40 : x
  2. Step 2: Convert to fraction form
    2,672.92/3,689.66 = 1,788.40/x
  3. Step 3: Cross multiply
    2,672.92x = 3,689.66 × 1,788.40
  4. Step 4: Simplify right side
    2,672.92x = 6,598,587.94
  5. Step 5: Solve for x
    x = 6,598,587.94/2,672.92
  6. Step 6: Final answer
    x = 2,468.68

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1.5x scale

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.