Home / 8,135.31-11,234.67-6,949.47

Finding the Fourth Proportional to 8,135.31, 11,234.67 and 6,949.47

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Solution

The fourth proportional to 8,135.31, 11,234.67 and 6,949.47 is: 9,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.31 : 11,234.67 = 6,949.47 : x
  2. Step 2: Convert to fraction form
    8,135.31/11,234.67 = 6,949.47/x
  3. Step 3: Cross multiply
    8,135.31x = 11,234.67 × 6,949.47
  4. Step 4: Simplify right side
    8,135.31x = 78,075,002.12
  5. Step 5: Solve for x
    x = 78,075,002.12/8,135.31
  6. Step 6: Final answer
    x = 9,597.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.