Home / 4,921.43-7,381.47-1,999.05

Finding the Fourth Proportional to 4,921.43, 7,381.47 and 1,999.05

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Solution

The fourth proportional to 4,921.43, 7,381.47 and 1,999.05 is: 2,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.43 : 7,381.47 = 1,999.05 : x
  2. Step 2: Convert to fraction form
    4,921.43/7,381.47 = 1,999.05/x
  3. Step 3: Cross multiply
    4,921.43x = 7,381.47 × 1,999.05
  4. Step 4: Simplify right side
    4,921.43x = 14,755,955.64
  5. Step 5: Solve for x
    x = 14,755,955.64/4,921.43
  6. Step 6: Final answer
    x = 2,998.30

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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.