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Finding the Fourth Proportional to 8,626.79, 11,905.73 and 5,089.31

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Solution

The fourth proportional to 8,626.79, 11,905.73 and 5,089.31 is: 7,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.79 : 11,905.73 = 5,089.31 : x
  2. Step 2: Convert to fraction form
    8,626.79/11,905.73 = 5,089.31/x
  3. Step 3: Cross multiply
    8,626.79x = 11,905.73 × 5,089.31
  4. Step 4: Simplify right side
    8,626.79x = 60,591,950.75
  5. Step 5: Solve for x
    x = 60,591,950.75/8,626.79
  6. Step 6: Final answer
    x = 7,023.70

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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.