Home / 1,553.28-2,143.56-923.88

Finding the Fourth Proportional to 1,553.28, 2,143.56 and 923.88

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Solution

The fourth proportional to 1,553.28, 2,143.56 and 923.88 is: 1,274.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.28 : 2,143.56 = 923.88 : x
  2. Step 2: Convert to fraction form
    1,553.28/2,143.56 = 923.88/x
  3. Step 3: Cross multiply
    1,553.28x = 2,143.56 × 923.88
  4. Step 4: Simplify right side
    1,553.28x = 1,980,392.21
  5. Step 5: Solve for x
    x = 1,980,392.21/1,553.28
  6. Step 6: Final answer
    x = 1,274.97

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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.