Home / 4,980.25-6,872.47-2,990.44

Finding the Fourth Proportional to 4,980.25, 6,872.47 and 2,990.44

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Solution

The fourth proportional to 4,980.25, 6,872.47 and 2,990.44 is: 4,126.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.25 : 6,872.47 = 2,990.44 : x
  2. Step 2: Convert to fraction form
    4,980.25/6,872.47 = 2,990.44/x
  3. Step 3: Cross multiply
    4,980.25x = 6,872.47 × 2,990.44
  4. Step 4: Simplify right side
    4,980.25x = 20,551,709.19
  5. Step 5: Solve for x
    x = 20,551,709.19/4,980.25
  6. Step 6: Final answer
    x = 4,126.64

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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.