Home / 1,639.36-2,264.61-1,141.75

Finding the Fourth Proportional to 1,639.36, 2,264.61 and 1,141.75

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Solution

The fourth proportional to 1,639.36, 2,264.61 and 1,141.75 is: 1,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.36 : 2,264.61 = 1,141.75 : x
  2. Step 2: Convert to fraction form
    1,639.36/2,264.61 = 1,141.75/x
  3. Step 3: Cross multiply
    1,639.36x = 2,264.61 × 1,141.75
  4. Step 4: Simplify right side
    1,639.36x = 2,585,618.47
  5. Step 5: Solve for x
    x = 2,585,618.47/1,639.36
  6. Step 6: Final answer
    x = 1,577.21

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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.