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Finding the Fourth Proportional to 6,980.54, 10,465.74 and 3,280.88

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Solution

The fourth proportional to 6,980.54, 10,465.74 and 3,280.88 is: 4,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.54 : 10,465.74 = 3,280.88 : x
  2. Step 2: Convert to fraction form
    6,980.54/10,465.74 = 3,280.88/x
  3. Step 3: Cross multiply
    6,980.54x = 10,465.74 × 3,280.88
  4. Step 4: Simplify right side
    6,980.54x = 34,336,837.05
  5. Step 5: Solve for x
    x = 34,336,837.05/6,980.54
  6. Step 6: Final answer
    x = 4,918.94

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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.