Home / 2,142.84-2,956.08-1,443

Finding the Fourth Proportional to 2,142.84, 2,956.08 and 1,443

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Solution

The fourth proportional to 2,142.84, 2,956.08 and 1,443 is: 1,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.84 : 2,956.08 = 1,443 : x
  2. Step 2: Convert to fraction form
    2,142.84/2,956.08 = 1,443/x
  3. Step 3: Cross multiply
    2,142.84x = 2,956.08 × 1,443
  4. Step 4: Simplify right side
    2,142.84x = 4,265,623.44
  5. Step 5: Solve for x
    x = 4,265,623.44/2,142.84
  6. Step 6: Final answer
    x = 1,990.64

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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.