Home / 7,078.08-9,766.26-3,934.20

Finding the Fourth Proportional to 7,078.08, 9,766.26 and 3,934.20

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Solution

The fourth proportional to 7,078.08, 9,766.26 and 3,934.20 is: 5,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.08 : 9,766.26 = 3,934.20 : x
  2. Step 2: Convert to fraction form
    7,078.08/9,766.26 = 3,934.20/x
  3. Step 3: Cross multiply
    7,078.08x = 9,766.26 × 3,934.20
  4. Step 4: Simplify right side
    7,078.08x = 38,422,420.09
  5. Step 5: Solve for x
    x = 38,422,420.09/7,078.08
  6. Step 6: Final answer
    x = 5,428.37

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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.