Home / 8,621.15-12,930.74-2,382.05

Finding the Fourth Proportional to 8,621.15, 12,930.74 and 2,382.05

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Solution

The fourth proportional to 8,621.15, 12,930.74 and 2,382.05 is: 3,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.15 : 12,930.74 = 2,382.05 : x
  2. Step 2: Convert to fraction form
    8,621.15/12,930.74 = 2,382.05/x
  3. Step 3: Cross multiply
    8,621.15x = 12,930.74 × 2,382.05
  4. Step 4: Simplify right side
    8,621.15x = 30,801,639.23
  5. Step 5: Solve for x
    x = 30,801,639.23/8,621.15
  6. Step 6: Final answer
    x = 3,572.80

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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.