Home / 8,940.30-12,336.93-5,161.74

Finding the Fourth Proportional to 8,940.30, 12,336.93 and 5,161.74

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Solution

The fourth proportional to 8,940.30, 12,336.93 and 5,161.74 is: 7,122.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.30 : 12,336.93 = 5,161.74 : x
  2. Step 2: Convert to fraction form
    8,940.30/12,336.93 = 5,161.74/x
  3. Step 3: Cross multiply
    8,940.30x = 12,336.93 × 5,161.74
  4. Step 4: Simplify right side
    8,940.30x = 63,680,025.06
  5. Step 5: Solve for x
    x = 63,680,025.06/8,940.30
  6. Step 6: Final answer
    x = 7,122.81

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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.