Home / 6,109.32-9,156.94-3,139.40

Finding the Fourth Proportional to 6,109.32, 9,156.94 and 3,139.40

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Solution

The fourth proportional to 6,109.32, 9,156.94 and 3,139.40 is: 4,705.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,109.32 : 9,156.94 = 3,139.40 : x
  2. Step 2: Convert to fraction form
    6,109.32/9,156.94 = 3,139.40/x
  3. Step 3: Cross multiply
    6,109.32x = 9,156.94 × 3,139.40
  4. Step 4: Simplify right side
    6,109.32x = 28,747,297.44
  5. Step 5: Solve for x
    x = 28,747,297.44/6,109.32
  6. Step 6: Final answer
    x = 4,705.48

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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.