Home / 1,765.36-2,433.38-1,391.74

Finding the Fourth Proportional to 1,765.36, 2,433.38 and 1,391.74

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Solution

The fourth proportional to 1,765.36, 2,433.38 and 1,391.74 is: 1,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.36 : 2,433.38 = 1,391.74 : x
  2. Step 2: Convert to fraction form
    1,765.36/2,433.38 = 1,391.74/x
  3. Step 3: Cross multiply
    1,765.36x = 2,433.38 × 1,391.74
  4. Step 4: Simplify right side
    1,765.36x = 3,386,632.28
  5. Step 5: Solve for x
    x = 3,386,632.28/1,765.36
  6. Step 6: Final answer
    x = 1,918.38

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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.