Home / 1,639.34-2,264.85-1,393.23

Finding the Fourth Proportional to 1,639.34, 2,264.85 and 1,393.23

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Solution

The fourth proportional to 1,639.34, 2,264.85 and 1,393.23 is: 1,924.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.34 : 2,264.85 = 1,393.23 : x
  2. Step 2: Convert to fraction form
    1,639.34/2,264.85 = 1,393.23/x
  3. Step 3: Cross multiply
    1,639.34x = 2,264.85 × 1,393.23
  4. Step 4: Simplify right side
    1,639.34x = 3,155,456.97
  5. Step 5: Solve for x
    x = 3,155,456.97/1,639.34
  6. Step 6: Final answer
    x = 1,924.84

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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.