Home / 2,072.24-3,108.84-840.50

Finding the Fourth Proportional to 2,072.24, 3,108.84 and 840.50

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Solution

The fourth proportional to 2,072.24, 3,108.84 and 840.50 is: 1,260.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.24 : 3,108.84 = 840.50 : x
  2. Step 2: Convert to fraction form
    2,072.24/3,108.84 = 840.50/x
  3. Step 3: Cross multiply
    2,072.24x = 3,108.84 × 840.50
  4. Step 4: Simplify right side
    2,072.24x = 2,612,980.02
  5. Step 5: Solve for x
    x = 2,612,980.02/2,072.24
  6. Step 6: Final answer
    x = 1,260.94

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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.