Home / 8,420.10-12,633.79-4,519.95

Finding the Fourth Proportional to 8,420.10, 12,633.79 and 4,519.95

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Solution

The fourth proportional to 8,420.10, 12,633.79 and 4,519.95 is: 6,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.10 : 12,633.79 = 4,519.95 : x
  2. Step 2: Convert to fraction form
    8,420.10/12,633.79 = 4,519.95/x
  3. Step 3: Cross multiply
    8,420.10x = 12,633.79 × 4,519.95
  4. Step 4: Simplify right side
    8,420.10x = 57,104,099.11
  5. Step 5: Solve for x
    x = 57,104,099.11/8,420.10
  6. Step 6: Final answer
    x = 6,781.88

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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.