Home / 2,990.30-4,484.52-1,429.48

Finding the Fourth Proportional to 2,990.30, 4,484.52 and 1,429.48

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Solution

The fourth proportional to 2,990.30, 4,484.52 and 1,429.48 is: 2,143.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.30 : 4,484.52 = 1,429.48 : x
  2. Step 2: Convert to fraction form
    2,990.30/4,484.52 = 1,429.48/x
  3. Step 3: Cross multiply
    2,990.30x = 4,484.52 × 1,429.48
  4. Step 4: Simplify right side
    2,990.30x = 6,410,531.65
  5. Step 5: Solve for x
    x = 6,410,531.65/2,990.30
  6. Step 6: Final answer
    x = 2,143.78

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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.