Home / 5,409.69-8,115.10-2,290.01

Finding the Fourth Proportional to 5,409.69, 8,115.10 and 2,290.01

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Solution

The fourth proportional to 5,409.69, 8,115.10 and 2,290.01 is: 3,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.69 : 8,115.10 = 2,290.01 : x
  2. Step 2: Convert to fraction form
    5,409.69/8,115.10 = 2,290.01/x
  3. Step 3: Cross multiply
    5,409.69x = 8,115.10 × 2,290.01
  4. Step 4: Simplify right side
    5,409.69x = 18,583,660.15
  5. Step 5: Solve for x
    x = 18,583,660.15/5,409.69
  6. Step 6: Final answer
    x = 3,435.25

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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.