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Finding the Fourth Proportional to 8,709.64, 13,054.78 and 4,330.28

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Solution

The fourth proportional to 8,709.64, 13,054.78 and 4,330.28 is: 6,490.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.64 : 13,054.78 = 4,330.28 : x
  2. Step 2: Convert to fraction form
    8,709.64/13,054.78 = 4,330.28/x
  3. Step 3: Cross multiply
    8,709.64x = 13,054.78 × 4,330.28
  4. Step 4: Simplify right side
    8,709.64x = 56,530,852.74
  5. Step 5: Solve for x
    x = 56,530,852.74/8,709.64
  6. Step 6: Final answer
    x = 6,490.61

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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.