Home / 5,099.28-7,642.44-2,788.08

Finding the Fourth Proportional to 5,099.28, 7,642.44 and 2,788.08

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Solution

The fourth proportional to 5,099.28, 7,642.44 and 2,788.08 is: 4,178.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,099.28 : 7,642.44 = 2,788.08 : x
  2. Step 2: Convert to fraction form
    5,099.28/7,642.44 = 2,788.08/x
  3. Step 3: Cross multiply
    5,099.28x = 7,642.44 × 2,788.08
  4. Step 4: Simplify right side
    5,099.28x = 21,307,734.12
  5. Step 5: Solve for x
    x = 21,307,734.12/5,099.28
  6. Step 6: Final answer
    x = 4,178.58

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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.