Home / 5,121.82-7,690.02-4,886.92

Finding the Fourth Proportional to 5,121.82, 7,690.02 and 4,886.92

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Solution

The fourth proportional to 5,121.82, 7,690.02 and 4,886.92 is: 7,337.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.82 : 7,690.02 = 4,886.92 : x
  2. Step 2: Convert to fraction form
    5,121.82/7,690.02 = 4,886.92/x
  3. Step 3: Cross multiply
    5,121.82x = 7,690.02 × 4,886.92
  4. Step 4: Simplify right side
    5,121.82x = 37,580,512.54
  5. Step 5: Solve for x
    x = 37,580,512.54/5,121.82
  6. Step 6: Final answer
    x = 7,337.34

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1.5x scale

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.