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Finding the Fourth Proportional to 7,332.72, 11,000.16 and 2,139

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Solution

The fourth proportional to 7,332.72, 11,000.16 and 2,139 is: 3,208.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,332.72 : 11,000.16 = 2,139 : x
  2. Step 2: Convert to fraction form
    7,332.72/11,000.16 = 2,139/x
  3. Step 3: Cross multiply
    7,332.72x = 11,000.16 × 2,139
  4. Step 4: Simplify right side
    7,332.72x = 23,529,342.24
  5. Step 5: Solve for x
    x = 23,529,342.24/7,332.72
  6. Step 6: Final answer
    x = 3,208.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.