Home / 8,772.20-13,166.40-4,392.80

Finding the Fourth Proportional to 8,772.20, 13,166.40 and 4,392.80

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Solution

The fourth proportional to 8,772.20, 13,166.40 and 4,392.80 is: 6,593.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.20 : 13,166.40 = 4,392.80 : x
  2. Step 2: Convert to fraction form
    8,772.20/13,166.40 = 4,392.80/x
  3. Step 3: Cross multiply
    8,772.20x = 13,166.40 × 4,392.80
  4. Step 4: Simplify right side
    8,772.20x = 57,837,361.92
  5. Step 5: Solve for x
    x = 57,837,361.92/8,772.20
  6. Step 6: Final answer
    x = 6,593.26

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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.