Home / 2,124.28-2,931.78-1,192.96

Finding the Fourth Proportional to 2,124.28, 2,931.78 and 1,192.96

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Solution

The fourth proportional to 2,124.28, 2,931.78 and 1,192.96 is: 1,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.28 : 2,931.78 = 1,192.96 : x
  2. Step 2: Convert to fraction form
    2,124.28/2,931.78 = 1,192.96/x
  3. Step 3: Cross multiply
    2,124.28x = 2,931.78 × 1,192.96
  4. Step 4: Simplify right side
    2,124.28x = 3,497,496.27
  5. Step 5: Solve for x
    x = 3,497,496.27/2,124.28
  6. Step 6: Final answer
    x = 1,646.44

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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.