Home / 2,820.57-4,231.11-740.58

Finding the Fourth Proportional to 2,820.57, 4,231.11 and 740.58

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Solution

The fourth proportional to 2,820.57, 4,231.11 and 740.58 is: 1,110.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.57 : 4,231.11 = 740.58 : x
  2. Step 2: Convert to fraction form
    2,820.57/4,231.11 = 740.58/x
  3. Step 3: Cross multiply
    2,820.57x = 4,231.11 × 740.58
  4. Step 4: Simplify right side
    2,820.57x = 3,133,475.44
  5. Step 5: Solve for x
    x = 3,133,475.44/2,820.57
  6. Step 6: Final answer
    x = 1,110.94

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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.