Home / 8,582.12-12,872.52-3,319.64

Finding the Fourth Proportional to 8,582.12, 12,872.52 and 3,319.64

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Solution

The fourth proportional to 8,582.12, 12,872.52 and 3,319.64 is: 4,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,582.12 : 12,872.52 = 3,319.64 : x
  2. Step 2: Convert to fraction form
    8,582.12/12,872.52 = 3,319.64/x
  3. Step 3: Cross multiply
    8,582.12x = 12,872.52 × 3,319.64
  4. Step 4: Simplify right side
    8,582.12x = 42,732,132.29
  5. Step 5: Solve for x
    x = 42,732,132.29/8,582.12
  6. Step 6: Final answer
    x = 4,979.20

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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.