Home / 3,087.32-4,256.30-2,990.49

Finding the Fourth Proportional to 3,087.32, 4,256.30 and 2,990.49

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Solution

The fourth proportional to 3,087.32, 4,256.30 and 2,990.49 is: 4,122.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.32 : 4,256.30 = 2,990.49 : x
  2. Step 2: Convert to fraction form
    3,087.32/4,256.30 = 2,990.49/x
  3. Step 3: Cross multiply
    3,087.32x = 4,256.30 × 2,990.49
  4. Step 4: Simplify right side
    3,087.32x = 12,728,433.19
  5. Step 5: Solve for x
    x = 12,728,433.19/3,087.32
  6. Step 6: Final answer
    x = 4,122.82

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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.