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Finding the Fourth Proportional to 8,663.18, 12,994.64 and 2,089.31

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Solution

The fourth proportional to 8,663.18, 12,994.64 and 2,089.31 is: 3,133.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.18 : 12,994.64 = 2,089.31 : x
  2. Step 2: Convert to fraction form
    8,663.18/12,994.64 = 2,089.31/x
  3. Step 3: Cross multiply
    8,663.18x = 12,994.64 × 2,089.31
  4. Step 4: Simplify right side
    8,663.18x = 27,149,771.55
  5. Step 5: Solve for x
    x = 27,149,771.55/8,663.18
  6. Step 6: Final answer
    x = 3,133.93

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1.5x scale

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.