Home / 5,156.35-7,115.80-2,798.50

Finding the Fourth Proportional to 5,156.35, 7,115.80 and 2,798.50

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Solution

The fourth proportional to 5,156.35, 7,115.80 and 2,798.50 is: 3,861.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.35 : 7,115.80 = 2,798.50 : x
  2. Step 2: Convert to fraction form
    5,156.35/7,115.80 = 2,798.50/x
  3. Step 3: Cross multiply
    5,156.35x = 7,115.80 × 2,798.50
  4. Step 4: Simplify right side
    5,156.35x = 19,913,566.30
  5. Step 5: Solve for x
    x = 19,913,566.30/5,156.35
  6. Step 6: Final answer
    x = 3,861.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.