Home / 2,989.66-4,124.98-1,994.28

Finding the Fourth Proportional to 2,989.66, 4,124.98 and 1,994.28

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Solution

The fourth proportional to 2,989.66, 4,124.98 and 1,994.28 is: 2,751.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.66 : 4,124.98 = 1,994.28 : x
  2. Step 2: Convert to fraction form
    2,989.66/4,124.98 = 1,994.28/x
  3. Step 3: Cross multiply
    2,989.66x = 4,124.98 × 1,994.28
  4. Step 4: Simplify right side
    2,989.66x = 8,226,365.11
  5. Step 5: Solve for x
    x = 8,226,365.11/2,989.66
  6. Step 6: Final answer
    x = 2,751.61

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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.