Home / 8,619.58-12,929.65-2,380.06

Finding the Fourth Proportional to 8,619.58, 12,929.65 and 2,380.06

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Solution

The fourth proportional to 8,619.58, 12,929.65 and 2,380.06 is: 3,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.58 : 12,929.65 = 2,380.06 : x
  2. Step 2: Convert to fraction form
    8,619.58/12,929.65 = 2,380.06/x
  3. Step 3: Cross multiply
    8,619.58x = 12,929.65 × 2,380.06
  4. Step 4: Simplify right side
    8,619.58x = 30,773,342.78
  5. Step 5: Solve for x
    x = 30,773,342.78/8,619.58
  6. Step 6: Final answer
    x = 3,570.17

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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.