Home / 6,389.10-9,563.13-3,420.14

Finding the Fourth Proportional to 6,389.10, 9,563.13 and 3,420.14

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Solution

The fourth proportional to 6,389.10, 9,563.13 and 3,420.14 is: 5,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.10 : 9,563.13 = 3,420.14 : x
  2. Step 2: Convert to fraction form
    6,389.10/9,563.13 = 3,420.14/x
  3. Step 3: Cross multiply
    6,389.10x = 9,563.13 × 3,420.14
  4. Step 4: Simplify right side
    6,389.10x = 32,707,195.62
  5. Step 5: Solve for x
    x = 32,707,195.62/6,389.10
  6. Step 6: Final answer
    x = 5,119.22

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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.