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Finding the Fourth Proportional to 8,369.79, 12,541.32 and 4,420.87

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Solution

The fourth proportional to 8,369.79, 12,541.32 and 4,420.87 is: 6,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.79 : 12,541.32 = 4,420.87 : x
  2. Step 2: Convert to fraction form
    8,369.79/12,541.32 = 4,420.87/x
  3. Step 3: Cross multiply
    8,369.79x = 12,541.32 × 4,420.87
  4. Step 4: Simplify right side
    8,369.79x = 55,443,545.35
  5. Step 5: Solve for x
    x = 55,443,545.35/8,369.79
  6. Step 6: Final answer
    x = 6,624.25

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Why These Related Problems?

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