Home / 1,383.08-2,084.97-1,291.41

Finding the Fourth Proportional to 1,383.08, 2,084.97 and 1,291.41

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Solution

The fourth proportional to 1,383.08, 2,084.97 and 1,291.41 is: 1,946.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.08 : 2,084.97 = 1,291.41 : x
  2. Step 2: Convert to fraction form
    1,383.08/2,084.97 = 1,291.41/x
  3. Step 3: Cross multiply
    1,383.08x = 2,084.97 × 1,291.41
  4. Step 4: Simplify right side
    1,383.08x = 2,692,551.11
  5. Step 5: Solve for x
    x = 2,692,551.11/1,383.08
  6. Step 6: Final answer
    x = 1,946.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.