Home / 4,878.06-6,731.70-2,889.60

Finding the Fourth Proportional to 4,878.06, 6,731.70 and 2,889.60

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Solution

The fourth proportional to 4,878.06, 6,731.70 and 2,889.60 is: 3,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.06 : 6,731.70 = 2,889.60 : x
  2. Step 2: Convert to fraction form
    4,878.06/6,731.70 = 2,889.60/x
  3. Step 3: Cross multiply
    4,878.06x = 6,731.70 × 2,889.60
  4. Step 4: Simplify right side
    4,878.06x = 19,451,920.32
  5. Step 5: Solve for x
    x = 19,451,920.32/4,878.06
  6. Step 6: Final answer
    x = 3,987.63

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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.