Home / 7,291.06-10,938.09-3,131.30

Finding the Fourth Proportional to 7,291.06, 10,938.09 and 3,131.30

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Solution

The fourth proportional to 7,291.06, 10,938.09 and 3,131.30 is: 4,697.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.06 : 10,938.09 = 3,131.30 : x
  2. Step 2: Convert to fraction form
    7,291.06/10,938.09 = 3,131.30/x
  3. Step 3: Cross multiply
    7,291.06x = 10,938.09 × 3,131.30
  4. Step 4: Simplify right side
    7,291.06x = 34,250,441.22
  5. Step 5: Solve for x
    x = 34,250,441.22/7,291.06
  6. Step 6: Final answer
    x = 4,697.59

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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.