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Finding the Fourth Proportional to 7,317.11, 10,978.13 and 2,320.31

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Solution

The fourth proportional to 7,317.11, 10,978.13 and 2,320.31 is: 3,481.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,317.11 : 10,978.13 = 2,320.31 : x
  2. Step 2: Convert to fraction form
    7,317.11/10,978.13 = 2,320.31/x
  3. Step 3: Cross multiply
    7,317.11x = 10,978.13 × 2,320.31
  4. Step 4: Simplify right side
    7,317.11x = 25,472,615.73
  5. Step 5: Solve for x
    x = 25,472,615.73/7,317.11
  6. Step 6: Final answer
    x = 3,481.24

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1.5x scale

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.