Home / 3,922.70-5,884.56-1,289.30

Finding the Fourth Proportional to 3,922.70, 5,884.56 and 1,289.30

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Solution

The fourth proportional to 3,922.70, 5,884.56 and 1,289.30 is: 1,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.70 : 5,884.56 = 1,289.30 : x
  2. Step 2: Convert to fraction form
    3,922.70/5,884.56 = 1,289.30/x
  3. Step 3: Cross multiply
    3,922.70x = 5,884.56 × 1,289.30
  4. Step 4: Simplify right side
    3,922.70x = 7,586,963.21
  5. Step 5: Solve for x
    x = 7,586,963.21/3,922.70
  6. Step 6: Final answer
    x = 1,934.12

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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.