Home / 7,487.79-11,231.96-2,807.33

Finding the Fourth Proportional to 7,487.79, 11,231.96 and 2,807.33

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Solution

The fourth proportional to 7,487.79, 11,231.96 and 2,807.33 is: 4,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.79 : 11,231.96 = 2,807.33 : x
  2. Step 2: Convert to fraction form
    7,487.79/11,231.96 = 2,807.33/x
  3. Step 3: Cross multiply
    7,487.79x = 11,231.96 × 2,807.33
  4. Step 4: Simplify right side
    7,487.79x = 31,531,748.07
  5. Step 5: Solve for x
    x = 31,531,748.07/7,487.79
  6. Step 6: Final answer
    x = 4,211.09

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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.