Home / 8,428.24-12,643.86-2,882.20

Finding the Fourth Proportional to 8,428.24, 12,643.86 and 2,882.20

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Solution

The fourth proportional to 8,428.24, 12,643.86 and 2,882.20 is: 4,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.24 : 12,643.86 = 2,882.20 : x
  2. Step 2: Convert to fraction form
    8,428.24/12,643.86 = 2,882.20/x
  3. Step 3: Cross multiply
    8,428.24x = 12,643.86 × 2,882.20
  4. Step 4: Simplify right side
    8,428.24x = 36,442,133.29
  5. Step 5: Solve for x
    x = 36,442,133.29/8,428.24
  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.