Home / 12,608.32-18,911.40-3,845.20

Finding the Fourth Proportional to 12,608.32, 18,911.40 and 3,845.20

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Solution

The fourth proportional to 12,608.32, 18,911.40 and 3,845.20 is: 5,767.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.32 : 18,911.40 = 3,845.20 : x
  2. Step 2: Convert to fraction form
    12,608.32/18,911.40 = 3,845.20/x
  3. Step 3: Cross multiply
    12,608.32x = 18,911.40 × 3,845.20
  4. Step 4: Simplify right side
    12,608.32x = 72,718,115.28
  5. Step 5: Solve for x
    x = 72,718,115.28/12,608.32
  6. Step 6: Final answer
    x = 5,767.47

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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.