Home / 5,274-7,913.28-2,808.12

Finding the Fourth Proportional to 5,274, 7,913.28 and 2,808.12

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Solution

The fourth proportional to 5,274, 7,913.28 and 2,808.12 is: 4,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274 : 7,913.28 = 2,808.12 : x
  2. Step 2: Convert to fraction form
    5,274/7,913.28 = 2,808.12/x
  3. Step 3: Cross multiply
    5,274x = 7,913.28 × 2,808.12
  4. Step 4: Simplify right side
    5,274x = 22,221,439.83
  5. Step 5: Solve for x
    x = 22,221,439.83/5,274
  6. Step 6: Final answer
    x = 4,213.39

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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.