Home / 8,212.81-11,333.91-4,627.80

Finding the Fourth Proportional to 8,212.81, 11,333.91 and 4,627.80

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Solution

The fourth proportional to 8,212.81, 11,333.91 and 4,627.80 is: 6,386.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.81 : 11,333.91 = 4,627.80 : x
  2. Step 2: Convert to fraction form
    8,212.81/11,333.91 = 4,627.80/x
  3. Step 3: Cross multiply
    8,212.81x = 11,333.91 × 4,627.80
  4. Step 4: Simplify right side
    8,212.81x = 52,451,069.78
  5. Step 5: Solve for x
    x = 52,451,069.78/8,212.81
  6. Step 6: Final answer
    x = 6,386.50

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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.