Home / 8,428.78-12,642.81-2,882.62

Finding the Fourth Proportional to 8,428.78, 12,642.81 and 2,882.62

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Solution

The fourth proportional to 8,428.78, 12,642.81 and 2,882.62 is: 4,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.78 : 12,642.81 = 2,882.62 : x
  2. Step 2: Convert to fraction form
    8,428.78/12,642.81 = 2,882.62/x
  3. Step 3: Cross multiply
    8,428.78x = 12,642.81 × 2,882.62
  4. Step 4: Simplify right side
    8,428.78x = 36,444,416.96
  5. Step 5: Solve for x
    x = 36,444,416.96/8,428.78
  6. Step 6: Final answer
    x = 4,323.81

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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.