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Finding the Fourth Proportional to 7,347.00, 10,138.87 and 3,989.77

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Solution

The fourth proportional to 7,347.00, 10,138.87 and 3,989.77 is: 5,505.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,347.00 : 10,138.87 = 3,989.77 : x
  2. Step 2: Convert to fraction form
    7,347.00/10,138.87 = 3,989.77/x
  3. Step 3: Cross multiply
    7,347.00x = 10,138.87 × 3,989.77
  4. Step 4: Simplify right side
    7,347.00x = 40,451,749.39
  5. Step 5: Solve for x
    x = 40,451,749.39/7,347.00
  6. Step 6: Final answer
    x = 5,505.89

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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.