Home / 9,119.25-12,584.66-5,140.36

Finding the Fourth Proportional to 9,119.25, 12,584.66 and 5,140.36

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Solution

The fourth proportional to 9,119.25, 12,584.66 and 5,140.36 is: 7,093.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.25 : 12,584.66 = 5,140.36 : x
  2. Step 2: Convert to fraction form
    9,119.25/12,584.66 = 5,140.36/x
  3. Step 3: Cross multiply
    9,119.25x = 12,584.66 × 5,140.36
  4. Step 4: Simplify right side
    9,119.25x = 64,689,682.88
  5. Step 5: Solve for x
    x = 64,689,682.88/9,119.25
  6. Step 6: Final answer
    x = 7,093.75

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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.