Home / 2,194.40-3,285.20-1,938.40

Finding the Fourth Proportional to 2,194.40, 3,285.20 and 1,938.40

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Solution

The fourth proportional to 2,194.40, 3,285.20 and 1,938.40 is: 2,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,194.40 : 3,285.20 = 1,938.40 : x
  2. Step 2: Convert to fraction form
    2,194.40/3,285.20 = 1,938.40/x
  3. Step 3: Cross multiply
    2,194.40x = 3,285.20 × 1,938.40
  4. Step 4: Simplify right side
    2,194.40x = 6,368,031.68
  5. Step 5: Solve for x
    x = 6,368,031.68/2,194.40
  6. Step 6: Final answer
    x = 2,901.95

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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.