Home / 8,428.19-12,644.73-2,585.66

Finding the Fourth Proportional to 8,428.19, 12,644.73 and 2,585.66

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Solution

The fourth proportional to 8,428.19, 12,644.73 and 2,585.66 is: 3,879.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.19 : 12,644.73 = 2,585.66 : x
  2. Step 2: Convert to fraction form
    8,428.19/12,644.73 = 2,585.66/x
  3. Step 3: Cross multiply
    8,428.19x = 12,644.73 × 2,585.66
  4. Step 4: Simplify right side
    8,428.19x = 32,694,972.57
  5. Step 5: Solve for x
    x = 32,694,972.57/8,428.19
  6. Step 6: Final answer
    x = 3,879.24

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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.