Home / 2,689.44-4,011.60-2,572.80

Finding the Fourth Proportional to 2,689.44, 4,011.60 and 2,572.80

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Solution

The fourth proportional to 2,689.44, 4,011.60 and 2,572.80 is: 3,837.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.44 : 4,011.60 = 2,572.80 : x
  2. Step 2: Convert to fraction form
    2,689.44/4,011.60 = 2,572.80/x
  3. Step 3: Cross multiply
    2,689.44x = 4,011.60 × 2,572.80
  4. Step 4: Simplify right side
    2,689.44x = 10,321,044.48
  5. Step 5: Solve for x
    x = 10,321,044.48/2,689.44
  6. Step 6: Final answer
    x = 3,837.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.