Home / 2,840.23-4,261.40-1,279.76

Finding the Fourth Proportional to 2,840.23, 4,261.40 and 1,279.76

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Solution

The fourth proportional to 2,840.23, 4,261.40 and 1,279.76 is: 1,920.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.23 : 4,261.40 = 1,279.76 : x
  2. Step 2: Convert to fraction form
    2,840.23/4,261.40 = 1,279.76/x
  3. Step 3: Cross multiply
    2,840.23x = 4,261.40 × 1,279.76
  4. Step 4: Simplify right side
    2,840.23x = 5,453,562.87
  5. Step 5: Solve for x
    x = 5,453,562.87/2,840.23
  6. Step 6: Final answer
    x = 1,920.12

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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.