Home / 7,816.20-11,715.18-3,429.45

Finding the Fourth Proportional to 7,816.20, 11,715.18 and 3,429.45

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Solution

The fourth proportional to 7,816.20, 11,715.18 and 3,429.45 is: 5,140.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.20 : 11,715.18 = 3,429.45 : x
  2. Step 2: Convert to fraction form
    7,816.20/11,715.18 = 3,429.45/x
  3. Step 3: Cross multiply
    7,816.20x = 11,715.18 × 3,429.45
  4. Step 4: Simplify right side
    7,816.20x = 40,176,624.05
  5. Step 5: Solve for x
    x = 40,176,624.05/7,816.20
  6. Step 6: Final answer
    x = 5,140.17

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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.