Home / 6,815.20-10,216.80-4,616.80

Finding the Fourth Proportional to 6,815.20, 10,216.80 and 4,616.80

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Solution

The fourth proportional to 6,815.20, 10,216.80 and 4,616.80 is: 6,921.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.20 : 10,216.80 = 4,616.80 : x
  2. Step 2: Convert to fraction form
    6,815.20/10,216.80 = 4,616.80/x
  3. Step 3: Cross multiply
    6,815.20x = 10,216.80 × 4,616.80
  4. Step 4: Simplify right side
    6,815.20x = 47,168,922.24
  5. Step 5: Solve for x
    x = 47,168,922.24/6,815.20
  6. Step 6: Final answer
    x = 6,921.14

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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.