Home / 3,385.28-4,672.01-1,969.20

Finding the Fourth Proportional to 3,385.28, 4,672.01 and 1,969.20

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Solution

The fourth proportional to 3,385.28, 4,672.01 and 1,969.20 is: 2,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.28 : 4,672.01 = 1,969.20 : x
  2. Step 2: Convert to fraction form
    3,385.28/4,672.01 = 1,969.20/x
  3. Step 3: Cross multiply
    3,385.28x = 4,672.01 × 1,969.20
  4. Step 4: Simplify right side
    3,385.28x = 9,200,112.25
  5. Step 5: Solve for x
    x = 9,200,112.25/3,385.28
  6. Step 6: Final answer
    x = 2,717.69

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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.