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Finding the Fourth Proportional to 8,258.81, 12,388.21 and 3,513.74

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Solution

The fourth proportional to 8,258.81, 12,388.21 and 3,513.74 is: 5,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.81 : 12,388.21 = 3,513.74 : x
  2. Step 2: Convert to fraction form
    8,258.81/12,388.21 = 3,513.74/x
  3. Step 3: Cross multiply
    8,258.81x = 12,388.21 × 3,513.74
  4. Step 4: Simplify right side
    8,258.81x = 43,528,878.28
  5. Step 5: Solve for x
    x = 43,528,878.28/8,258.81
  6. Step 6: Final answer
    x = 5,270.60

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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.