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Finding the Fourth Proportional to 5,855.28, 8,817.28 and 4,223.12

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Solution

The fourth proportional to 5,855.28, 8,817.28 and 4,223.12 is: 6,359.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,855.28 : 8,817.28 = 4,223.12 : x
  2. Step 2: Convert to fraction form
    5,855.28/8,817.28 = 4,223.12/x
  3. Step 3: Cross multiply
    5,855.28x = 8,817.28 × 4,223.12
  4. Step 4: Simplify right side
    5,855.28x = 37,236,431.51
  5. Step 5: Solve for x
    x = 37,236,431.51/5,855.28
  6. Step 6: Final answer
    x = 6,359.46

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