Home / 1,938.90-2,676.38-1,152.95

Finding the Fourth Proportional to 1,938.90, 2,676.38 and 1,152.95

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Solution

The fourth proportional to 1,938.90, 2,676.38 and 1,152.95 is: 1,591.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.90 : 2,676.38 = 1,152.95 : x
  2. Step 2: Convert to fraction form
    1,938.90/2,676.38 = 1,152.95/x
  3. Step 3: Cross multiply
    1,938.90x = 2,676.38 × 1,152.95
  4. Step 4: Simplify right side
    1,938.90x = 3,085,713.17
  5. Step 5: Solve for x
    x = 3,085,713.17/1,938.90
  6. Step 6: Final answer
    x = 1,591.48

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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.