Home / 2,989.98-4,127.30-1,994.90

Finding the Fourth Proportional to 2,989.98, 4,127.30 and 1,994.90

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Solution

The fourth proportional to 2,989.98, 4,127.30 and 1,994.90 is: 2,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.98 : 4,127.30 = 1,994.90 : x
  2. Step 2: Convert to fraction form
    2,989.98/4,127.30 = 1,994.90/x
  3. Step 3: Cross multiply
    2,989.98x = 4,127.30 × 1,994.90
  4. Step 4: Simplify right side
    2,989.98x = 8,233,550.77
  5. Step 5: Solve for x
    x = 8,233,550.77/2,989.98
  6. Step 6: Final answer
    x = 2,753.71

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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.