Home / 4,877.97-6,728.86-2,990.47

Finding the Fourth Proportional to 4,877.97, 6,728.86 and 2,990.47

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Solution

The fourth proportional to 4,877.97, 6,728.86 and 2,990.47 is: 4,125.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877.97 : 6,728.86 = 2,990.47 : x
  2. Step 2: Convert to fraction form
    4,877.97/6,728.86 = 2,990.47/x
  3. Step 3: Cross multiply
    4,877.97x = 6,728.86 × 2,990.47
  4. Step 4: Simplify right side
    4,877.97x = 20,122,453.96
  5. Step 5: Solve for x
    x = 20,122,453.96/4,877.97
  6. Step 6: Final answer
    x = 4,125.17

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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.