Home / 5,196.49-7,171.28-2,838.65

Finding the Fourth Proportional to 5,196.49, 7,171.28 and 2,838.65

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Solution

The fourth proportional to 5,196.49, 7,171.28 and 2,838.65 is: 3,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,196.49 : 7,171.28 = 2,838.65 : x
  2. Step 2: Convert to fraction form
    5,196.49/7,171.28 = 2,838.65/x
  3. Step 3: Cross multiply
    5,196.49x = 7,171.28 × 2,838.65
  4. Step 4: Simplify right side
    5,196.49x = 20,356,753.97
  5. Step 5: Solve for x
    x = 20,356,753.97/5,196.49
  6. Step 6: Final answer
    x = 3,917.40

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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.