Home / 6,389.18-9,571.25-4,191.25

Finding the Fourth Proportional to 6,389.18, 9,571.25 and 4,191.25

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Solution

The fourth proportional to 6,389.18, 9,571.25 and 4,191.25 is: 6,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.18 : 9,571.25 = 4,191.25 : x
  2. Step 2: Convert to fraction form
    6,389.18/9,571.25 = 4,191.25/x
  3. Step 3: Cross multiply
    6,389.18x = 9,571.25 × 4,191.25
  4. Step 4: Simplify right side
    6,389.18x = 40,115,488.11
  5. Step 5: Solve for x
    x = 40,115,488.11/6,389.18
  6. Step 6: Final answer
    x = 6,278.66

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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.