Home / 4,979.44-6,870.99-2,990.35

Finding the Fourth Proportional to 4,979.44, 6,870.99 and 2,990.35

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Solution

The fourth proportional to 4,979.44, 6,870.99 and 2,990.35 is: 4,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.44 : 6,870.99 = 2,990.35 : x
  2. Step 2: Convert to fraction form
    4,979.44/6,870.99 = 2,990.35/x
  3. Step 3: Cross multiply
    4,979.44x = 6,870.99 × 2,990.35
  4. Step 4: Simplify right side
    4,979.44x = 20,546,664.95
  5. Step 5: Solve for x
    x = 20,546,664.95/4,979.44
  6. Step 6: Final answer
    x = 4,126.30

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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.