Home / 8,612.36-12,919.32-3,417

Finding the Fourth Proportional to 8,612.36, 12,919.32 and 3,417

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Solution

The fourth proportional to 8,612.36, 12,919.32 and 3,417 is: 5,125.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.36 : 12,919.32 = 3,417 : x
  2. Step 2: Convert to fraction form
    8,612.36/12,919.32 = 3,417/x
  3. Step 3: Cross multiply
    8,612.36x = 12,919.32 × 3,417
  4. Step 4: Simplify right side
    8,612.36x = 44,145,316.44
  5. Step 5: Solve for x
    x = 44,145,316.44/8,612.36
  6. Step 6: Final answer
    x = 5,125.81

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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.