Home / 7,840.38-11,749.50-4,331.96

Finding the Fourth Proportional to 7,840.38, 11,749.50 and 4,331.96

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Solution

The fourth proportional to 7,840.38, 11,749.50 and 4,331.96 is: 6,491.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.38 : 11,749.50 = 4,331.96 : x
  2. Step 2: Convert to fraction form
    7,840.38/11,749.50 = 4,331.96/x
  3. Step 3: Cross multiply
    7,840.38x = 11,749.50 × 4,331.96
  4. Step 4: Simplify right side
    7,840.38x = 50,898,364.02
  5. Step 5: Solve for x
    x = 50,898,364.02/7,840.38
  6. Step 6: Final answer
    x = 6,491.82

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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.