Home / 5,156.15-7,117.20-3,668.39

Finding the Fourth Proportional to 5,156.15, 7,117.20 and 3,668.39

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Solution

The fourth proportional to 5,156.15, 7,117.20 and 3,668.39 is: 5,063.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.15 : 7,117.20 = 3,668.39 : x
  2. Step 2: Convert to fraction form
    5,156.15/7,117.20 = 3,668.39/x
  3. Step 3: Cross multiply
    5,156.15x = 7,117.20 × 3,668.39
  4. Step 4: Simplify right side
    5,156.15x = 26,108,629.72
  5. Step 5: Solve for x
    x = 26,108,629.72/5,156.15
  6. Step 6: Final answer
    x = 5,063.59

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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.