Home / 5,197.09-7,171.71-2,838.77

Finding the Fourth Proportional to 5,197.09, 7,171.71 and 2,838.77

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Solution

The fourth proportional to 5,197.09, 7,171.71 and 2,838.77 is: 3,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.09 : 7,171.71 = 2,838.77 : x
  2. Step 2: Convert to fraction form
    5,197.09/7,171.71 = 2,838.77/x
  3. Step 3: Cross multiply
    5,197.09x = 7,171.71 × 2,838.77
  4. Step 4: Simplify right side
    5,197.09x = 20,358,835.20
  5. Step 5: Solve for x
    x = 20,358,835.20/5,197.09
  6. Step 6: Final answer
    x = 3,917.35

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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.