Home / 6,379.19-9,574.38-3,420.05

Finding the Fourth Proportional to 6,379.19, 9,574.38 and 3,420.05

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Solution

The fourth proportional to 6,379.19, 9,574.38 and 3,420.05 is: 5,133.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.19 : 9,574.38 = 3,420.05 : x
  2. Step 2: Convert to fraction form
    6,379.19/9,574.38 = 3,420.05/x
  3. Step 3: Cross multiply
    6,379.19x = 9,574.38 × 3,420.05
  4. Step 4: Simplify right side
    6,379.19x = 32,744,810.45
  5. Step 5: Solve for x
    x = 32,744,810.45/6,379.19
  6. Step 6: Final answer
    x = 5,133.07

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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.