Home / 1,352.29-1,864.48-1,128.56

Finding the Fourth Proportional to 1,352.29, 1,864.48 and 1,128.56

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Solution

The fourth proportional to 1,352.29, 1,864.48 and 1,128.56 is: 1,556.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.29 : 1,864.48 = 1,128.56 : x
  2. Step 2: Convert to fraction form
    1,352.29/1,864.48 = 1,128.56/x
  3. Step 3: Cross multiply
    1,352.29x = 1,864.48 × 1,128.56
  4. Step 4: Simplify right side
    1,352.29x = 2,104,177.55
  5. Step 5: Solve for x
    x = 2,104,177.55/1,352.29
  6. Step 6: Final answer
    x = 1,556.01

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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.