Home / 7,815.34-11,719.46-3,370.90

Finding the Fourth Proportional to 7,815.34, 11,719.46 and 3,370.90

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Solution

The fourth proportional to 7,815.34, 11,719.46 and 3,370.90 is: 5,054.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.34 : 11,719.46 = 3,370.90 : x
  2. Step 2: Convert to fraction form
    7,815.34/11,719.46 = 3,370.90/x
  3. Step 3: Cross multiply
    7,815.34x = 11,719.46 × 3,370.90
  4. Step 4: Simplify right side
    7,815.34x = 39,505,127.71
  5. Step 5: Solve for x
    x = 39,505,127.71/7,815.34
  6. Step 6: Final answer
    x = 5,054.82

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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.