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Finding the Fourth Proportional to 7,500.78, 10,352.34 and 4,358.79

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Solution

The fourth proportional to 7,500.78, 10,352.34 and 4,358.79 is: 6,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,500.78 : 10,352.34 = 4,358.79 : x
  2. Step 2: Convert to fraction form
    7,500.78/10,352.34 = 4,358.79/x
  3. Step 3: Cross multiply
    7,500.78x = 10,352.34 × 4,358.79
  4. Step 4: Simplify right side
    7,500.78x = 45,123,676.07
  5. Step 5: Solve for x
    x = 45,123,676.07/7,500.78
  6. Step 6: Final answer
    x = 6,015.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.