Home / 9,289.72-13,921.92-5,123.47

Finding the Fourth Proportional to 9,289.72, 13,921.92 and 5,123.47

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Solution

The fourth proportional to 9,289.72, 13,921.92 and 5,123.47 is: 7,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.72 : 13,921.92 = 5,123.47 : x
  2. Step 2: Convert to fraction form
    9,289.72/13,921.92 = 5,123.47/x
  3. Step 3: Cross multiply
    9,289.72x = 13,921.92 × 5,123.47
  4. Step 4: Simplify right side
    9,289.72x = 71,328,539.46
  5. Step 5: Solve for x
    x = 71,328,539.46/9,289.72
  6. Step 6: Final answer
    x = 7,678.22

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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.