Home / 8,578.48-12,868.80-3,385.84

Finding the Fourth Proportional to 8,578.48, 12,868.80 and 3,385.84

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Solution

The fourth proportional to 8,578.48, 12,868.80 and 3,385.84 is: 5,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.48 : 12,868.80 = 3,385.84 : x
  2. Step 2: Convert to fraction form
    8,578.48/12,868.80 = 3,385.84/x
  3. Step 3: Cross multiply
    8,578.48x = 12,868.80 × 3,385.84
  4. Step 4: Simplify right side
    8,578.48x = 43,571,697.79
  5. Step 5: Solve for x
    x = 43,571,697.79/8,578.48
  6. Step 6: Final answer
    x = 5,079.19

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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.