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Finding the Fourth Proportional to 4,920.68, 7,382.78 and 2,000.68

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Solution

The fourth proportional to 4,920.68, 7,382.78 and 2,000.68 is: 3,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.68 : 7,382.78 = 2,000.68 : x
  2. Step 2: Convert to fraction form
    4,920.68/7,382.78 = 2,000.68/x
  3. Step 3: Cross multiply
    4,920.68x = 7,382.78 × 2,000.68
  4. Step 4: Simplify right side
    4,920.68x = 14,770,580.29
  5. Step 5: Solve for x
    x = 14,770,580.29/4,920.68
  6. Step 6: Final answer
    x = 3,001.74

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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.