Home / 3,922.07-5,389.43-3,134.75

Finding the Fourth Proportional to 3,922.07, 5,389.43 and 3,134.75

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Solution

The fourth proportional to 3,922.07, 5,389.43 and 3,134.75 is: 4,307.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.07 : 5,389.43 = 3,134.75 : x
  2. Step 2: Convert to fraction form
    3,922.07/5,389.43 = 3,134.75/x
  3. Step 3: Cross multiply
    3,922.07x = 5,389.43 × 3,134.75
  4. Step 4: Simplify right side
    3,922.07x = 16,894,515.69
  5. Step 5: Solve for x
    x = 16,894,515.69/3,922.07
  6. Step 6: Final answer
    x = 4,307.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.