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Finding the Fourth Proportional to 8,999.66, 13,505.52 and 3,156.32

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Solution

The fourth proportional to 8,999.66, 13,505.52 and 3,156.32 is: 4,736.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.66 : 13,505.52 = 3,156.32 : x
  2. Step 2: Convert to fraction form
    8,999.66/13,505.52 = 3,156.32/x
  3. Step 3: Cross multiply
    8,999.66x = 13,505.52 × 3,156.32
  4. Step 4: Simplify right side
    8,999.66x = 42,627,742.89
  5. Step 5: Solve for x
    x = 42,627,742.89/8,999.66
  6. Step 6: Final answer
    x = 4,736.59

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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.