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Finding the Fourth Proportional to 9,420.76, 12,994.92 and 6,771.76

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Solution

The fourth proportional to 9,420.76, 12,994.92 and 6,771.76 is: 9,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.76 : 12,994.92 = 6,771.76 : x
  2. Step 2: Convert to fraction form
    9,420.76/12,994.92 = 6,771.76/x
  3. Step 3: Cross multiply
    9,420.76x = 12,994.92 × 6,771.76
  4. Step 4: Simplify right side
    9,420.76x = 87,998,479.46
  5. Step 5: Solve for x
    x = 87,998,479.46/9,420.76
  6. Step 6: Final answer
    x = 9,340.91

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Half scale
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Double scale
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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.