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Finding the Fourth Proportional to 2,990.07, 4,484.58 and 798.95

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Solution

The fourth proportional to 2,990.07, 4,484.58 and 798.95 is: 1,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.07 : 4,484.58 = 798.95 : x
  2. Step 2: Convert to fraction form
    2,990.07/4,484.58 = 798.95/x
  3. Step 3: Cross multiply
    2,990.07x = 4,484.58 × 798.95
  4. Step 4: Simplify right side
    2,990.07x = 3,582,932.77
  5. Step 5: Solve for x
    x = 3,582,932.77/2,990.07
  6. Step 6: Final answer
    x = 1,198.28

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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.