Home / 8,109.77-11,191.49-4,572.99

Finding the Fourth Proportional to 8,109.77, 11,191.49 and 4,572.99

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Solution

The fourth proportional to 8,109.77, 11,191.49 and 4,572.99 is: 6,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.77 : 11,191.49 = 4,572.99 : x
  2. Step 2: Convert to fraction form
    8,109.77/11,191.49 = 4,572.99/x
  3. Step 3: Cross multiply
    8,109.77x = 11,191.49 × 4,572.99
  4. Step 4: Simplify right side
    8,109.77x = 51,178,532.75
  5. Step 5: Solve for x
    x = 51,178,532.75/8,109.77
  6. Step 6: Final answer
    x = 6,310.72

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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.