Home / 5,129.19-7,688.46-2,492.79

Finding the Fourth Proportional to 5,129.19, 7,688.46 and 2,492.79

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Solution

The fourth proportional to 5,129.19, 7,688.46 and 2,492.79 is: 3,736.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.19 : 7,688.46 = 2,492.79 : x
  2. Step 2: Convert to fraction form
    5,129.19/7,688.46 = 2,492.79/x
  3. Step 3: Cross multiply
    5,129.19x = 7,688.46 × 2,492.79
  4. Step 4: Simplify right side
    5,129.19x = 19,165,716.20
  5. Step 5: Solve for x
    x = 19,165,716.20/5,129.19
  6. Step 6: Final answer
    x = 3,736.60

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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.