Home / 1,671.22-2,304.58-1,387.18

Finding the Fourth Proportional to 1,671.22, 2,304.58 and 1,387.18

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Solution

The fourth proportional to 1,671.22, 2,304.58 and 1,387.18 is: 1,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.22 : 2,304.58 = 1,387.18 : x
  2. Step 2: Convert to fraction form
    1,671.22/2,304.58 = 1,387.18/x
  3. Step 3: Cross multiply
    1,671.22x = 2,304.58 × 1,387.18
  4. Step 4: Simplify right side
    1,671.22x = 3,196,867.28
  5. Step 5: Solve for x
    x = 3,196,867.28/1,671.22
  6. Step 6: Final answer
    x = 1,912.89

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1.5x scale

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.