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Finding the Fourth Proportional to 2,995.80, 4,489.65 and 2,005.80

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Solution

The fourth proportional to 2,995.80, 4,489.65 and 2,005.80 is: 3,005.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,995.80 : 4,489.65 = 2,005.80 : x
  2. Step 2: Convert to fraction form
    2,995.80/4,489.65 = 2,005.80/x
  3. Step 3: Cross multiply
    2,995.80x = 4,489.65 × 2,005.80
  4. Step 4: Simplify right side
    2,995.80x = 9,005,339.97
  5. Step 5: Solve for x
    x = 9,005,339.97/2,995.80
  6. Step 6: Final answer
    x = 3,005.99

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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.