Home / 5,214.66-7,196.15-2,856.80

Finding the Fourth Proportional to 5,214.66, 7,196.15 and 2,856.80

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Solution

The fourth proportional to 5,214.66, 7,196.15 and 2,856.80 is: 3,942.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.66 : 7,196.15 = 2,856.80 : x
  2. Step 2: Convert to fraction form
    5,214.66/7,196.15 = 2,856.80/x
  3. Step 3: Cross multiply
    5,214.66x = 7,196.15 × 2,856.80
  4. Step 4: Simplify right side
    5,214.66x = 20,557,986.45
  5. Step 5: Solve for x
    x = 20,557,986.45/5,214.66
  6. Step 6: Final answer
    x = 3,942.35

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1.5x scale

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.