Home / 7,430.28-11,143.09-2,685.82

Finding the Fourth Proportional to 7,430.28, 11,143.09 and 2,685.82

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Solution

The fourth proportional to 7,430.28, 11,143.09 and 2,685.82 is: 4,027.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.28 : 11,143.09 = 2,685.82 : x
  2. Step 2: Convert to fraction form
    7,430.28/11,143.09 = 2,685.82/x
  3. Step 3: Cross multiply
    7,430.28x = 11,143.09 × 2,685.82
  4. Step 4: Simplify right side
    7,430.28x = 29,928,333.98
  5. Step 5: Solve for x
    x = 29,928,333.98/7,430.28
  6. Step 6: Final answer
    x = 4,027.89

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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.