Home / 6,511.36-9,766.98-3,389.78

Finding the Fourth Proportional to 6,511.36, 9,766.98 and 3,389.78

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Solution

The fourth proportional to 6,511.36, 9,766.98 and 3,389.78 is: 5,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.36 : 9,766.98 = 3,389.78 : x
  2. Step 2: Convert to fraction form
    6,511.36/9,766.98 = 3,389.78/x
  3. Step 3: Cross multiply
    6,511.36x = 9,766.98 × 3,389.78
  4. Step 4: Simplify right side
    6,511.36x = 33,107,913.46
  5. Step 5: Solve for x
    x = 33,107,913.46/6,511.36
  6. Step 6: Final answer
    x = 5,084.64

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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.