Home / 8,784.36-12,121.74-4,805.22

Finding the Fourth Proportional to 8,784.36, 12,121.74 and 4,805.22

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Solution

The fourth proportional to 8,784.36, 12,121.74 and 4,805.22 is: 6,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.36 : 12,121.74 = 4,805.22 : x
  2. Step 2: Convert to fraction form
    8,784.36/12,121.74 = 4,805.22/x
  3. Step 3: Cross multiply
    8,784.36x = 12,121.74 × 4,805.22
  4. Step 4: Simplify right side
    8,784.36x = 58,247,627.48
  5. Step 5: Solve for x
    x = 58,247,627.48/8,784.36
  6. Step 6: Final answer
    x = 6,630.83

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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.