Home / 1,639.80-2,260.26-1,426.57

Finding the Fourth Proportional to 1,639.80, 2,260.26 and 1,426.57

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Solution

The fourth proportional to 1,639.80, 2,260.26 and 1,426.57 is: 1,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.80 : 2,260.26 = 1,426.57 : x
  2. Step 2: Convert to fraction form
    1,639.80/2,260.26 = 1,426.57/x
  3. Step 3: Cross multiply
    1,639.80x = 2,260.26 × 1,426.57
  4. Step 4: Simplify right side
    1,639.80x = 3,224,419.11
  5. Step 5: Solve for x
    x = 3,224,419.11/1,639.80
  6. Step 6: Final answer
    x = 1,966.35

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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.