Home / 3,088.40-4,257.60-1,908.80

Finding the Fourth Proportional to 3,088.40, 4,257.60 and 1,908.80

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Solution

The fourth proportional to 3,088.40, 4,257.60 and 1,908.80 is: 2,631.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,088.40 : 4,257.60 = 1,908.80 : x
  2. Step 2: Convert to fraction form
    3,088.40/4,257.60 = 1,908.80/x
  3. Step 3: Cross multiply
    3,088.40x = 4,257.60 × 1,908.80
  4. Step 4: Simplify right side
    3,088.40x = 8,126,906.88
  5. Step 5: Solve for x
    x = 8,126,906.88/3,088.40
  6. Step 6: Final answer
    x = 2,631.43

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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.