Home / 8,612.24-12,911.07-3,415.28

Finding the Fourth Proportional to 8,612.24, 12,911.07 and 3,415.28

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Solution

The fourth proportional to 8,612.24, 12,911.07 and 3,415.28 is: 5,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.24 : 12,911.07 = 3,415.28 : x
  2. Step 2: Convert to fraction form
    8,612.24/12,911.07 = 3,415.28/x
  3. Step 3: Cross multiply
    8,612.24x = 12,911.07 × 3,415.28
  4. Step 4: Simplify right side
    8,612.24x = 44,094,919.15
  5. Step 5: Solve for x
    x = 44,094,919.15/8,612.24
  6. Step 6: Final answer
    x = 5,120.03

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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.