Home / 7,286.31-10,929.78-2,355.45

Finding the Fourth Proportional to 7,286.31, 10,929.78 and 2,355.45

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Solution

The fourth proportional to 7,286.31, 10,929.78 and 2,355.45 is: 3,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.31 : 10,929.78 = 2,355.45 : x
  2. Step 2: Convert to fraction form
    7,286.31/10,929.78 = 2,355.45/x
  3. Step 3: Cross multiply
    7,286.31x = 10,929.78 × 2,355.45
  4. Step 4: Simplify right side
    7,286.31x = 25,744,550.30
  5. Step 5: Solve for x
    x = 25,744,550.30/7,286.31
  6. Step 6: Final answer
    x = 3,533.28

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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.