Home / 5,051.65-7,578.50-2,129.95

Finding the Fourth Proportional to 5,051.65, 7,578.50 and 2,129.95

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Solution

The fourth proportional to 5,051.65, 7,578.50 and 2,129.95 is: 3,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,051.65 : 7,578.50 = 2,129.95 : x
  2. Step 2: Convert to fraction form
    5,051.65/7,578.50 = 2,129.95/x
  3. Step 3: Cross multiply
    5,051.65x = 7,578.50 × 2,129.95
  4. Step 4: Simplify right side
    5,051.65x = 16,141,826.08
  5. Step 5: Solve for x
    x = 16,141,826.08/5,051.65
  6. Step 6: Final answer
    x = 3,195.36

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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.