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Finding the Fourth Proportional to 8,558.61, 12,844.61 and 4,398.45

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Solution

The fourth proportional to 8,558.61, 12,844.61 and 4,398.45 is: 6,601.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.61 : 12,844.61 = 4,398.45 : x
  2. Step 2: Convert to fraction form
    8,558.61/12,844.61 = 4,398.45/x
  3. Step 3: Cross multiply
    8,558.61x = 12,844.61 × 4,398.45
  4. Step 4: Simplify right side
    8,558.61x = 56,496,352.86
  5. Step 5: Solve for x
    x = 56,496,352.86/8,558.61
  6. Step 6: Final answer
    x = 6,601.11

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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.