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Finding the Fourth Proportional to 3,280.74, 4,924.61 and 1,821.12

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Solution

The fourth proportional to 3,280.74, 4,924.61 and 1,821.12 is: 2,733.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.74 : 4,924.61 = 1,821.12 : x
  2. Step 2: Convert to fraction form
    3,280.74/4,924.61 = 1,821.12/x
  3. Step 3: Cross multiply
    3,280.74x = 4,924.61 × 1,821.12
  4. Step 4: Simplify right side
    3,280.74x = 8,968,305.76
  5. Step 5: Solve for x
    x = 8,968,305.76/3,280.74
  6. Step 6: Final answer
    x = 2,733.62

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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.