Home / 7,421.89-11,127.57-3,470.97

Finding the Fourth Proportional to 7,421.89, 11,127.57 and 3,470.97

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Solution

The fourth proportional to 7,421.89, 11,127.57 and 3,470.97 is: 5,203.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.89 : 11,127.57 = 3,470.97 : x
  2. Step 2: Convert to fraction form
    7,421.89/11,127.57 = 3,470.97/x
  3. Step 3: Cross multiply
    7,421.89x = 11,127.57 × 3,470.97
  4. Step 4: Simplify right side
    7,421.89x = 38,623,461.64
  5. Step 5: Solve for x
    x = 38,623,461.64/7,421.89
  6. Step 6: Final answer
    x = 5,203.99

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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.