Home / 2,142.92-2,956.37-1,396.62

Finding the Fourth Proportional to 2,142.92, 2,956.37 and 1,396.62

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Solution

The fourth proportional to 2,142.92, 2,956.37 and 1,396.62 is: 1,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.92 : 2,956.37 = 1,396.62 : x
  2. Step 2: Convert to fraction form
    2,142.92/2,956.37 = 1,396.62/x
  3. Step 3: Cross multiply
    2,142.92x = 2,956.37 × 1,396.62
  4. Step 4: Simplify right side
    2,142.92x = 4,128,918.49
  5. Step 5: Solve for x
    x = 4,128,918.49/2,142.92
  6. Step 6: Final answer
    x = 1,926.77

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1.5x scale

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.