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Finding the Fourth Proportional to 5,885.92, 8,826.64 and 1,989.28

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Solution

The fourth proportional to 5,885.92, 8,826.64 and 1,989.28 is: 2,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,885.92 : 8,826.64 = 1,989.28 : x
  2. Step 2: Convert to fraction form
    5,885.92/8,826.64 = 1,989.28/x
  3. Step 3: Cross multiply
    5,885.92x = 8,826.64 × 1,989.28
  4. Step 4: Simplify right side
    5,885.92x = 17,558,658.42
  5. Step 5: Solve for x
    x = 17,558,658.42/5,885.92
  6. Step 6: Final answer
    x = 2,983.16

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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.