Home / 2,768.31-4,152.40-919.44

Finding the Fourth Proportional to 2,768.31, 4,152.40 and 919.44

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Solution

The fourth proportional to 2,768.31, 4,152.40 and 919.44 is: 1,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.31 : 4,152.40 = 919.44 : x
  2. Step 2: Convert to fraction form
    2,768.31/4,152.40 = 919.44/x
  3. Step 3: Cross multiply
    2,768.31x = 4,152.40 × 919.44
  4. Step 4: Simplify right side
    2,768.31x = 3,817,864.79
  5. Step 5: Solve for x
    x = 3,817,864.79/2,768.31
  6. Step 6: Final answer
    x = 1,379.13

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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.