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Finding the Fourth Proportional to 8,575.88, 12,864.36 and 3,313.40

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Solution

The fourth proportional to 8,575.88, 12,864.36 and 3,313.40 is: 4,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,575.88 : 12,864.36 = 3,313.40 : x
  2. Step 2: Convert to fraction form
    8,575.88/12,864.36 = 3,313.40/x
  3. Step 3: Cross multiply
    8,575.88x = 12,864.36 × 3,313.40
  4. Step 4: Simplify right side
    8,575.88x = 42,624,770.42
  5. Step 5: Solve for x
    x = 42,624,770.42/8,575.88
  6. Step 6: Final answer
    x = 4,970.31

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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.