Home / 4,984.56-6,878.79-2,889.90

Finding the Fourth Proportional to 4,984.56, 6,878.79 and 2,889.90

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Solution

The fourth proportional to 4,984.56, 6,878.79 and 2,889.90 is: 3,988.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984.56 : 6,878.79 = 2,889.90 : x
  2. Step 2: Convert to fraction form
    4,984.56/6,878.79 = 2,889.90/x
  3. Step 3: Cross multiply
    4,984.56x = 6,878.79 × 2,889.90
  4. Step 4: Simplify right side
    4,984.56x = 19,879,015.22
  5. Step 5: Solve for x
    x = 19,879,015.22/4,984.56
  6. Step 6: Final answer
    x = 3,988.12

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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.