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Finding the Fourth Proportional to 6,620.84, 9,137.04 and 3,826.16

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Solution

The fourth proportional to 6,620.84, 9,137.04 and 3,826.16 is: 5,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.84 : 9,137.04 = 3,826.16 : x
  2. Step 2: Convert to fraction form
    6,620.84/9,137.04 = 3,826.16/x
  3. Step 3: Cross multiply
    6,620.84x = 9,137.04 × 3,826.16
  4. Step 4: Simplify right side
    6,620.84x = 34,959,776.97
  5. Step 5: Solve for x
    x = 34,959,776.97/6,620.84
  6. Step 6: Final answer
    x = 5,280.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.