Home / 6,891.20-10,336.80-3,605.30

Finding the Fourth Proportional to 6,891.20, 10,336.80 and 3,605.30

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Solution

The fourth proportional to 6,891.20, 10,336.80 and 3,605.30 is: 5,407.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.20 : 10,336.80 = 3,605.30 : x
  2. Step 2: Convert to fraction form
    6,891.20/10,336.80 = 3,605.30/x
  3. Step 3: Cross multiply
    6,891.20x = 10,336.80 × 3,605.30
  4. Step 4: Simplify right side
    6,891.20x = 37,267,265.04
  5. Step 5: Solve for x
    x = 37,267,265.04/6,891.20
  6. Step 6: Final answer
    x = 5,407.95

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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.