Home / 7,431.57-11,140.05-3,538.71

Finding the Fourth Proportional to 7,431.57, 11,140.05 and 3,538.71

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Solution

The fourth proportional to 7,431.57, 11,140.05 and 3,538.71 is: 5,304.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.57 : 11,140.05 = 3,538.71 : x
  2. Step 2: Convert to fraction form
    7,431.57/11,140.05 = 3,538.71/x
  3. Step 3: Cross multiply
    7,431.57x = 11,140.05 × 3,538.71
  4. Step 4: Simplify right side
    7,431.57x = 39,421,406.34
  5. Step 5: Solve for x
    x = 39,421,406.34/7,431.57
  6. Step 6: Final answer
    x = 5,304.59

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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.