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Finding the Fourth Proportional to 7,239.38, 9,984.87 and 5,004.99

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Solution

The fourth proportional to 7,239.38, 9,984.87 and 5,004.99 is: 6,903.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.38 : 9,984.87 = 5,004.99 : x
  2. Step 2: Convert to fraction form
    7,239.38/9,984.87 = 5,004.99/x
  3. Step 3: Cross multiply
    7,239.38x = 9,984.87 × 5,004.99
  4. Step 4: Simplify right side
    7,239.38x = 49,974,174.50
  5. Step 5: Solve for x
    x = 49,974,174.50/7,239.38
  6. Step 6: Final answer
    x = 6,903.11

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1.5x scale

Why These Related Problems?

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