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Finding the Fourth Proportional to 3,285, 4,920.72 and 2,627.88

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Solution

The fourth proportional to 3,285, 4,920.72 and 2,627.88 is: 3,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285 : 4,920.72 = 2,627.88 : x
  2. Step 2: Convert to fraction form
    3,285/4,920.72 = 2,627.88/x
  3. Step 3: Cross multiply
    3,285x = 4,920.72 × 2,627.88
  4. Step 4: Simplify right side
    3,285x = 12,931,061.67
  5. Step 5: Solve for x
    x = 12,931,061.67/3,285
  6. Step 6: Final answer
    x = 3,936.40

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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.