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Finding the Fourth Proportional to 3,354.56, 4,641.12 and 3,280.64

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Solution

The fourth proportional to 3,354.56, 4,641.12 and 3,280.64 is: 4,538.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,354.56 : 4,641.12 = 3,280.64 : x
  2. Step 2: Convert to fraction form
    3,354.56/4,641.12 = 3,280.64/x
  3. Step 3: Cross multiply
    3,354.56x = 4,641.12 × 3,280.64
  4. Step 4: Simplify right side
    3,354.56x = 15,225,843.92
  5. Step 5: Solve for x
    x = 15,225,843.92/3,354.56
  6. Step 6: Final answer
    x = 4,538.85

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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.