Home / 7,920.26-11,881.59-5,745.40

Finding the Fourth Proportional to 7,920.26, 11,881.59 and 5,745.40

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Solution

The fourth proportional to 7,920.26, 11,881.59 and 5,745.40 is: 8,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.26 : 11,881.59 = 5,745.40 : x
  2. Step 2: Convert to fraction form
    7,920.26/11,881.59 = 5,745.40/x
  3. Step 3: Cross multiply
    7,920.26x = 11,881.59 × 5,745.40
  4. Step 4: Simplify right side
    7,920.26x = 68,264,487.19
  5. Step 5: Solve for x
    x = 68,264,487.19/7,920.26
  6. Step 6: Final answer
    x = 8,618.97

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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.