Home / 6,428.48-8,872.12-3,634.56

Finding the Fourth Proportional to 6,428.48, 8,872.12 and 3,634.56

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Solution

The fourth proportional to 6,428.48, 8,872.12 and 3,634.56 is: 5,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.48 : 8,872.12 = 3,634.56 : x
  2. Step 2: Convert to fraction form
    6,428.48/8,872.12 = 3,634.56/x
  3. Step 3: Cross multiply
    6,428.48x = 8,872.12 × 3,634.56
  4. Step 4: Simplify right side
    6,428.48x = 32,246,252.47
  5. Step 5: Solve for x
    x = 32,246,252.47/6,428.48
  6. Step 6: Final answer
    x = 5,016.16

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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.