Home / 7,847.89-11,771.90-2,917.53

Finding the Fourth Proportional to 7,847.89, 11,771.90 and 2,917.53

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Solution

The fourth proportional to 7,847.89, 11,771.90 and 2,917.53 is: 4,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.89 : 11,771.90 = 2,917.53 : x
  2. Step 2: Convert to fraction form
    7,847.89/11,771.90 = 2,917.53/x
  3. Step 3: Cross multiply
    7,847.89x = 11,771.90 × 2,917.53
  4. Step 4: Simplify right side
    7,847.89x = 34,344,871.41
  5. Step 5: Solve for x
    x = 34,344,871.41/7,847.89
  6. Step 6: Final answer
    x = 4,376.32

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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.