Home / 2,991.43-4,127.65-1,872.01

Finding the Fourth Proportional to 2,991.43, 4,127.65 and 1,872.01

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Solution

The fourth proportional to 2,991.43, 4,127.65 and 1,872.01 is: 2,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.43 : 4,127.65 = 1,872.01 : x
  2. Step 2: Convert to fraction form
    2,991.43/4,127.65 = 1,872.01/x
  3. Step 3: Cross multiply
    2,991.43x = 4,127.65 × 1,872.01
  4. Step 4: Simplify right side
    2,991.43x = 7,727,002.08
  5. Step 5: Solve for x
    x = 7,727,002.08/2,991.43
  6. Step 6: Final answer
    x = 2,583.05

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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.