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Finding the Fourth Proportional to 7,109.80, 10,660.13 and 2,952.67

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Solution

The fourth proportional to 7,109.80, 10,660.13 and 2,952.67 is: 4,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.80 : 10,660.13 = 2,952.67 : x
  2. Step 2: Convert to fraction form
    7,109.80/10,660.13 = 2,952.67/x
  3. Step 3: Cross multiply
    7,109.80x = 10,660.13 × 2,952.67
  4. Step 4: Simplify right side
    7,109.80x = 31,475,831.28
  5. Step 5: Solve for x
    x = 31,475,831.28/7,109.80
  6. Step 6: Final answer
    x = 4,427.11

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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.