Home / 8,519.34-12,780.21-3,585.90

Finding the Fourth Proportional to 8,519.34, 12,780.21 and 3,585.90

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Solution

The fourth proportional to 8,519.34, 12,780.21 and 3,585.90 is: 5,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.34 : 12,780.21 = 3,585.90 : x
  2. Step 2: Convert to fraction form
    8,519.34/12,780.21 = 3,585.90/x
  3. Step 3: Cross multiply
    8,519.34x = 12,780.21 × 3,585.90
  4. Step 4: Simplify right side
    8,519.34x = 45,828,555.04
  5. Step 5: Solve for x
    x = 45,828,555.04/8,519.34
  6. Step 6: Final answer
    x = 5,379.36

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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.