Home / 8,919.39-12,317.09-5,738.22

Finding the Fourth Proportional to 8,919.39, 12,317.09 and 5,738.22

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Solution

The fourth proportional to 8,919.39, 12,317.09 and 5,738.22 is: 7,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.39 : 12,317.09 = 5,738.22 : x
  2. Step 2: Convert to fraction form
    8,919.39/12,317.09 = 5,738.22/x
  3. Step 3: Cross multiply
    8,919.39x = 12,317.09 × 5,738.22
  4. Step 4: Simplify right side
    8,919.39x = 70,678,124.94
  5. Step 5: Solve for x
    x = 70,678,124.94/8,919.39
  6. Step 6: Final answer
    x = 7,924.10

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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.