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Finding the Fourth Proportional to 11,480.99, 17,220.47 and 3,160.74

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Solution

The fourth proportional to 11,480.99, 17,220.47 and 3,160.74 is: 4,740.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,480.99 : 17,220.47 = 3,160.74 : x
  2. Step 2: Convert to fraction form
    11,480.99/17,220.47 = 3,160.74/x
  3. Step 3: Cross multiply
    11,480.99x = 17,220.47 × 3,160.74
  4. Step 4: Simplify right side
    11,480.99x = 54,429,428.35
  5. Step 5: Solve for x
    x = 54,429,428.35/11,480.99
  6. Step 6: Final answer
    x = 4,740.83

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