Home / 8,159.20-12,219.60-5,048.80

Finding the Fourth Proportional to 8,159.20, 12,219.60 and 5,048.80

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Solution

The fourth proportional to 8,159.20, 12,219.60 and 5,048.80 is: 7,561.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.20 : 12,219.60 = 5,048.80 : x
  2. Step 2: Convert to fraction form
    8,159.20/12,219.60 = 5,048.80/x
  3. Step 3: Cross multiply
    8,159.20x = 12,219.60 × 5,048.80
  4. Step 4: Simplify right side
    8,159.20x = 61,694,316.48
  5. Step 5: Solve for x
    x = 61,694,316.48/8,159.20
  6. Step 6: Final answer
    x = 7,561.32

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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.