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Finding the Fourth Proportional to 8,797.91, 12,136.52 and 5,439.65

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Solution

The fourth proportional to 8,797.91, 12,136.52 and 5,439.65 is: 7,503.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,797.91 : 12,136.52 = 5,439.65 : x
  2. Step 2: Convert to fraction form
    8,797.91/12,136.52 = 5,439.65/x
  3. Step 3: Cross multiply
    8,797.91x = 12,136.52 × 5,439.65
  4. Step 4: Simplify right side
    8,797.91x = 66,018,393.82
  5. Step 5: Solve for x
    x = 66,018,393.82/8,797.91
  6. Step 6: Final answer
    x = 7,503.87

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.