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Finding the Fourth Proportional to 8,597.64, 12,879.18 and 4,485

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Solution

The fourth proportional to 8,597.64, 12,879.18 and 4,485 is: 6,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,597.64 : 12,879.18 = 4,485 : x
  2. Step 2: Convert to fraction form
    8,597.64/12,879.18 = 4,485/x
  3. Step 3: Cross multiply
    8,597.64x = 12,879.18 × 4,485
  4. Step 4: Simplify right side
    8,597.64x = 57,763,122.30
  5. Step 5: Solve for x
    x = 57,763,122.30/8,597.64
  6. Step 6: Final answer
    x = 6,718.49

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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.