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Finding the Fourth Proportional to 4,990.92, 7,484.07 and 1,479.66

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Solution

The fourth proportional to 4,990.92, 7,484.07 and 1,479.66 is: 2,218.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.92 : 7,484.07 = 1,479.66 : x
  2. Step 2: Convert to fraction form
    4,990.92/7,484.07 = 1,479.66/x
  3. Step 3: Cross multiply
    4,990.92x = 7,484.07 × 1,479.66
  4. Step 4: Simplify right side
    4,990.92x = 11,073,879.02
  5. Step 5: Solve for x
    x = 11,073,879.02/4,990.92
  6. Step 6: Final answer
    x = 2,218.81

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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.