Home / 2,206.60-3,310.38-646.64

Finding the Fourth Proportional to 2,206.60, 3,310.38 and 646.64

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Solution

The fourth proportional to 2,206.60, 3,310.38 and 646.64 is: 970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.60 : 3,310.38 = 646.64 : x
  2. Step 2: Convert to fraction form
    2,206.60/3,310.38 = 646.64/x
  3. Step 3: Cross multiply
    2,206.60x = 3,310.38 × 646.64
  4. Step 4: Simplify right side
    2,206.60x = 2,140,624.12
  5. Step 5: Solve for x
    x = 2,140,624.12/2,206.60
  6. Step 6: Final answer
    x = 970.10

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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.