Home / 4,921.74-7,380.75-1,999.05

Finding the Fourth Proportional to 4,921.74, 7,380.75 and 1,999.05

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Solution

The fourth proportional to 4,921.74, 7,380.75 and 1,999.05 is: 2,997.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.74 : 7,380.75 = 1,999.05 : x
  2. Step 2: Convert to fraction form
    4,921.74/7,380.75 = 1,999.05/x
  3. Step 3: Cross multiply
    4,921.74x = 7,380.75 × 1,999.05
  4. Step 4: Simplify right side
    4,921.74x = 14,754,488.29
  5. Step 5: Solve for x
    x = 14,754,488.29/4,921.74
  6. Step 6: Final answer
    x = 2,997.82

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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.