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Finding the Fourth Proportional to 8,601.19, 12,901.78 and 5,678.81

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Solution

The fourth proportional to 8,601.19, 12,901.78 and 5,678.81 is: 8,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.19 : 12,901.78 = 5,678.81 : x
  2. Step 2: Convert to fraction form
    8,601.19/12,901.78 = 5,678.81/x
  3. Step 3: Cross multiply
    8,601.19x = 12,901.78 × 5,678.81
  4. Step 4: Simplify right side
    8,601.19x = 73,266,757.28
  5. Step 5: Solve for x
    x = 73,266,757.28/8,601.19
  6. Step 6: Final answer
    x = 8,518.21

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Half scale
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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.