Home / 1,938.88-2,676.26-1,240.26

Finding the Fourth Proportional to 1,938.88, 2,676.26 and 1,240.26

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Solution

The fourth proportional to 1,938.88, 2,676.26 and 1,240.26 is: 1,711.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.88 : 2,676.26 = 1,240.26 : x
  2. Step 2: Convert to fraction form
    1,938.88/2,676.26 = 1,240.26/x
  3. Step 3: Cross multiply
    1,938.88x = 2,676.26 × 1,240.26
  4. Step 4: Simplify right side
    1,938.88x = 3,319,258.23
  5. Step 5: Solve for x
    x = 3,319,258.23/1,938.88
  6. Step 6: Final answer
    x = 1,711.95

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Half scale
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Double scale
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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.