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Finding the Fourth Proportional to 9,077.11, 13,602.90 and 7,219.99

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Solution

The fourth proportional to 9,077.11, 13,602.90 and 7,219.99 is: 10,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,077.11 : 13,602.90 = 7,219.99 : x
  2. Step 2: Convert to fraction form
    9,077.11/13,602.90 = 7,219.99/x
  3. Step 3: Cross multiply
    9,077.11x = 13,602.90 × 7,219.99
  4. Step 4: Simplify right side
    9,077.11x = 98,212,801.97
  5. Step 5: Solve for x
    x = 98,212,801.97/9,077.11
  6. Step 6: Final answer
    x = 10,819.83

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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.