Home / 4,921.21-7,381.50-1,999.44

Finding the Fourth Proportional to 4,921.21, 7,381.50 and 1,999.44

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Solution

The fourth proportional to 4,921.21, 7,381.50 and 1,999.44 is: 2,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.21 : 7,381.50 = 1,999.44 : x
  2. Step 2: Convert to fraction form
    4,921.21/7,381.50 = 1,999.44/x
  3. Step 3: Cross multiply
    4,921.21x = 7,381.50 × 1,999.44
  4. Step 4: Simplify right side
    4,921.21x = 14,758,866.36
  5. Step 5: Solve for x
    x = 14,758,866.36/4,921.21
  6. Step 6: Final answer
    x = 2,999.03

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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.