Home / 2,088.20-3,131.56-626.88

Finding the Fourth Proportional to 2,088.20, 3,131.56 and 626.88

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Solution

The fourth proportional to 2,088.20, 3,131.56 and 626.88 is: 940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.20 : 3,131.56 = 626.88 : x
  2. Step 2: Convert to fraction form
    2,088.20/3,131.56 = 626.88/x
  3. Step 3: Cross multiply
    2,088.20x = 3,131.56 × 626.88
  4. Step 4: Simplify right side
    2,088.20x = 1,963,112.33
  5. Step 5: Solve for x
    x = 1,963,112.33/2,088.20
  6. Step 6: Final answer
    x = 940.10

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1.5x scale

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.