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Finding the Fourth Proportional to 9,999.25, 14,998.95 and 3,425.50

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Solution

The fourth proportional to 9,999.25, 14,998.95 and 3,425.50 is: 5,138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.25 : 14,998.95 = 3,425.50 : x
  2. Step 2: Convert to fraction form
    9,999.25/14,998.95 = 3,425.50/x
  3. Step 3: Cross multiply
    9,999.25x = 14,998.95 × 3,425.50
  4. Step 4: Simplify right side
    9,999.25x = 51,378,903.23
  5. Step 5: Solve for x
    x = 51,378,903.23/9,999.25
  6. Step 6: Final answer
    x = 5,138.28

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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.