Home / 6,872.18-10,309.80-2,712.20

Finding the Fourth Proportional to 6,872.18, 10,309.80 and 2,712.20

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Solution

The fourth proportional to 6,872.18, 10,309.80 and 2,712.20 is: 4,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.18 : 10,309.80 = 2,712.20 : x
  2. Step 2: Convert to fraction form
    6,872.18/10,309.80 = 2,712.20/x
  3. Step 3: Cross multiply
    6,872.18x = 10,309.80 × 2,712.20
  4. Step 4: Simplify right side
    6,872.18x = 27,962,239.56
  5. Step 5: Solve for x
    x = 27,962,239.56/6,872.18
  6. Step 6: Final answer
    x = 4,068.90

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1.5x scale

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.