Home / 2,848.80-4,269.42-1,288.20

Finding the Fourth Proportional to 2,848.80, 4,269.42 and 1,288.20

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Solution

The fourth proportional to 2,848.80, 4,269.42 and 1,288.20 is: 1,930.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848.80 : 4,269.42 = 1,288.20 : x
  2. Step 2: Convert to fraction form
    2,848.80/4,269.42 = 1,288.20/x
  3. Step 3: Cross multiply
    2,848.80x = 4,269.42 × 1,288.20
  4. Step 4: Simplify right side
    2,848.80x = 5,499,866.84
  5. Step 5: Solve for x
    x = 5,499,866.84/2,848.80
  6. Step 6: Final answer
    x = 1,930.59

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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.