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Finding the Fourth Proportional to 8,702.99, 13,054.47 and 3,156.32

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Solution

The fourth proportional to 8,702.99, 13,054.47 and 3,156.32 is: 4,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.99 : 13,054.47 = 3,156.32 : x
  2. Step 2: Convert to fraction form
    8,702.99/13,054.47 = 3,156.32/x
  3. Step 3: Cross multiply
    8,702.99x = 13,054.47 × 3,156.32
  4. Step 4: Simplify right side
    8,702.99x = 41,204,105.55
  5. Step 5: Solve for x
    x = 41,204,105.55/8,702.99
  6. Step 6: Final answer
    x = 4,734.48

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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.