Home / 8,320.12-12,479.93-2,164.12

Finding the Fourth Proportional to 8,320.12, 12,479.93 and 2,164.12

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Solution

The fourth proportional to 8,320.12, 12,479.93 and 2,164.12 is: 3,246.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.12 : 12,479.93 = 2,164.12 : x
  2. Step 2: Convert to fraction form
    8,320.12/12,479.93 = 2,164.12/x
  3. Step 3: Cross multiply
    8,320.12x = 12,479.93 × 2,164.12
  4. Step 4: Simplify right side
    8,320.12x = 27,008,009.12
  5. Step 5: Solve for x
    x = 27,008,009.12/8,320.12
  6. Step 6: Final answer
    x = 3,246.11

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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.