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Finding the Fourth Proportional to 8,999.46, 12,419.64 and 5,021.64

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Solution

The fourth proportional to 8,999.46, 12,419.64 and 5,021.64 is: 6,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.46 : 12,419.64 = 5,021.64 : x
  2. Step 2: Convert to fraction form
    8,999.46/12,419.64 = 5,021.64/x
  3. Step 3: Cross multiply
    8,999.46x = 12,419.64 × 5,021.64
  4. Step 4: Simplify right side
    8,999.46x = 62,366,961.01
  5. Step 5: Solve for x
    x = 62,366,961.01/8,999.46
  6. Step 6: Final answer
    x = 6,930.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.