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Finding the Fourth Proportional to 3,308.64, 4,961.68 and 1,228.32

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Solution

The fourth proportional to 3,308.64, 4,961.68 and 1,228.32 is: 1,842.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.64 : 4,961.68 = 1,228.32 : x
  2. Step 2: Convert to fraction form
    3,308.64/4,961.68 = 1,228.32/x
  3. Step 3: Cross multiply
    3,308.64x = 4,961.68 × 1,228.32
  4. Step 4: Simplify right side
    3,308.64x = 6,094,530.78
  5. Step 5: Solve for x
    x = 6,094,530.78/3,308.64
  6. Step 6: Final answer
    x = 1,842.00

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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.