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Finding the Fourth Proportional to 8,745.61, 13,116.10 and 3,480.41

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Solution

The fourth proportional to 8,745.61, 13,116.10 and 3,480.41 is: 5,219.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.61 : 13,116.10 = 3,480.41 : x
  2. Step 2: Convert to fraction form
    8,745.61/13,116.10 = 3,480.41/x
  3. Step 3: Cross multiply
    8,745.61x = 13,116.10 × 3,480.41
  4. Step 4: Simplify right side
    8,745.61x = 45,649,331.76
  5. Step 5: Solve for x
    x = 45,649,331.76/8,745.61
  6. Step 6: Final answer
    x = 5,219.69

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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.