Home / 8,791.32-12,131.60-4,812.47

Finding the Fourth Proportional to 8,791.32, 12,131.60 and 4,812.47

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Solution

The fourth proportional to 8,791.32, 12,131.60 and 4,812.47 is: 6,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.32 : 12,131.60 = 4,812.47 : x
  2. Step 2: Convert to fraction form
    8,791.32/12,131.60 = 4,812.47/x
  3. Step 3: Cross multiply
    8,791.32x = 12,131.60 × 4,812.47
  4. Step 4: Simplify right side
    8,791.32x = 58,382,961.05
  5. Step 5: Solve for x
    x = 58,382,961.05/8,791.32
  6. Step 6: Final answer
    x = 6,640.98

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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.