Home / 2,987.46-4,482.81-1,997.87

Finding the Fourth Proportional to 2,987.46, 4,482.81 and 1,997.87

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Solution

The fourth proportional to 2,987.46, 4,482.81 and 1,997.87 is: 2,997.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.46 : 4,482.81 = 1,997.87 : x
  2. Step 2: Convert to fraction form
    2,987.46/4,482.81 = 1,997.87/x
  3. Step 3: Cross multiply
    2,987.46x = 4,482.81 × 1,997.87
  4. Step 4: Simplify right side
    2,987.46x = 8,956,049.20
  5. Step 5: Solve for x
    x = 8,956,049.20/2,987.46
  6. Step 6: Final answer
    x = 2,997.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.