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Finding the Fourth Proportional to 8,691.63, 11,994.45 and 4,712.74

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Solution

The fourth proportional to 8,691.63, 11,994.45 and 4,712.74 is: 6,503.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.63 : 11,994.45 = 4,712.74 : x
  2. Step 2: Convert to fraction form
    8,691.63/11,994.45 = 4,712.74/x
  3. Step 3: Cross multiply
    8,691.63x = 11,994.45 × 4,712.74
  4. Step 4: Simplify right side
    8,691.63x = 56,526,724.29
  5. Step 5: Solve for x
    x = 56,526,724.29/8,691.63
  6. Step 6: Final answer
    x = 6,503.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.