Home / 10,878.62-16,309.95-3,478.82

Finding the Fourth Proportional to 10,878.62, 16,309.95 and 3,478.82

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Solution

The fourth proportional to 10,878.62, 16,309.95 and 3,478.82 is: 5,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.62 : 16,309.95 = 3,478.82 : x
  2. Step 2: Convert to fraction form
    10,878.62/16,309.95 = 3,478.82/x
  3. Step 3: Cross multiply
    10,878.62x = 16,309.95 × 3,478.82
  4. Step 4: Simplify right side
    10,878.62x = 56,739,380.26
  5. Step 5: Solve for x
    x = 56,739,380.26/10,878.62
  6. Step 6: Final answer
    x = 5,215.68

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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.