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Finding the Fourth Proportional to 10,785.61, 16,178.42 and 2,994.42

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Solution

The fourth proportional to 10,785.61, 16,178.42 and 2,994.42 is: 4,491.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.61 : 16,178.42 = 2,994.42 : x
  2. Step 2: Convert to fraction form
    10,785.61/16,178.42 = 2,994.42/x
  3. Step 3: Cross multiply
    10,785.61x = 16,178.42 × 2,994.42
  4. Step 4: Simplify right side
    10,785.61x = 48,444,984.42
  5. Step 5: Solve for x
    x = 48,444,984.42/10,785.61
  6. Step 6: Final answer
    x = 4,491.63

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Double scale
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Similar ratio
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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.