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Finding the Fourth Proportional to 8,779.96, 13,171.02 and 2,940.76

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Solution

The fourth proportional to 8,779.96, 13,171.02 and 2,940.76 is: 4,411.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.96 : 13,171.02 = 2,940.76 : x
  2. Step 2: Convert to fraction form
    8,779.96/13,171.02 = 2,940.76/x
  3. Step 3: Cross multiply
    8,779.96x = 13,171.02 × 2,940.76
  4. Step 4: Simplify right side
    8,779.96x = 38,732,808.78
  5. Step 5: Solve for x
    x = 38,732,808.78/8,779.96
  6. Step 6: Final answer
    x = 4,411.50

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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.