Home / 6,813.20-10,219.80-4,480.40

Finding the Fourth Proportional to 6,813.20, 10,219.80 and 4,480.40

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Solution

The fourth proportional to 6,813.20, 10,219.80 and 4,480.40 is: 6,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,813.20 : 10,219.80 = 4,480.40 : x
  2. Step 2: Convert to fraction form
    6,813.20/10,219.80 = 4,480.40/x
  3. Step 3: Cross multiply
    6,813.20x = 10,219.80 × 4,480.40
  4. Step 4: Simplify right side
    6,813.20x = 45,788,791.92
  5. Step 5: Solve for x
    x = 45,788,791.92/6,813.20
  6. Step 6: Final answer
    x = 6,720.60

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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.