Home / 2,988.12-4,125.33-1,994.86

Finding the Fourth Proportional to 2,988.12, 4,125.33 and 1,994.86

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Solution

The fourth proportional to 2,988.12, 4,125.33 and 1,994.86 is: 2,754.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.12 : 4,125.33 = 1,994.86 : x
  2. Step 2: Convert to fraction form
    2,988.12/4,125.33 = 1,994.86/x
  3. Step 3: Cross multiply
    2,988.12x = 4,125.33 × 1,994.86
  4. Step 4: Simplify right side
    2,988.12x = 8,229,460.96
  5. Step 5: Solve for x
    x = 8,229,460.96/2,988.12
  6. Step 6: Final answer
    x = 2,754.06

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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.