Home / 8,378.82-11,567.39-5,730.12

Finding the Fourth Proportional to 8,378.82, 11,567.39 and 5,730.12

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Solution

The fourth proportional to 8,378.82, 11,567.39 and 5,730.12 is: 7,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.82 : 11,567.39 = 5,730.12 : x
  2. Step 2: Convert to fraction form
    8,378.82/11,567.39 = 5,730.12/x
  3. Step 3: Cross multiply
    8,378.82x = 11,567.39 × 5,730.12
  4. Step 4: Simplify right side
    8,378.82x = 66,282,504.14
  5. Step 5: Solve for x
    x = 66,282,504.14/8,378.82
  6. Step 6: Final answer
    x = 7,910.72

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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.