Home / 1,553.28-2,142.75-1,023.09

Finding the Fourth Proportional to 1,553.28, 2,142.75 and 1,023.09

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Solution

The fourth proportional to 1,553.28, 2,142.75 and 1,023.09 is: 1,411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.28 : 2,142.75 = 1,023.09 : x
  2. Step 2: Convert to fraction form
    1,553.28/2,142.75 = 1,023.09/x
  3. Step 3: Cross multiply
    1,553.28x = 2,142.75 × 1,023.09
  4. Step 4: Simplify right side
    1,553.28x = 2,192,226.10
  5. Step 5: Solve for x
    x = 2,192,226.10/1,553.28
  6. Step 6: Final answer
    x = 1,411.35

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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.