Home / 2,088.97-3,128.47-1,209.61

Finding the Fourth Proportional to 2,088.97, 3,128.47 and 1,209.61

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Solution

The fourth proportional to 2,088.97, 3,128.47 and 1,209.61 is: 1,811.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.97 : 3,128.47 = 1,209.61 : x
  2. Step 2: Convert to fraction form
    2,088.97/3,128.47 = 1,209.61/x
  3. Step 3: Cross multiply
    2,088.97x = 3,128.47 × 1,209.61
  4. Step 4: Simplify right side
    2,088.97x = 3,784,247.29
  5. Step 5: Solve for x
    x = 3,784,247.29/2,088.97
  6. Step 6: Final answer
    x = 1,811.54

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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.