Home / 8,620.08-12,929.85-2,380.47

Finding the Fourth Proportional to 8,620.08, 12,929.85 and 2,380.47

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Solution

The fourth proportional to 8,620.08, 12,929.85 and 2,380.47 is: 3,570.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.08 : 12,929.85 = 2,380.47 : x
  2. Step 2: Convert to fraction form
    8,620.08/12,929.85 = 2,380.47/x
  3. Step 3: Cross multiply
    8,620.08x = 12,929.85 × 2,380.47
  4. Step 4: Simplify right side
    8,620.08x = 30,779,120.03
  5. Step 5: Solve for x
    x = 30,779,120.03/8,620.08
  6. Step 6: Final answer
    x = 3,570.63

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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.