Home / 3,154.30-4,725.82-1,921.07

Finding the Fourth Proportional to 3,154.30, 4,725.82 and 1,921.07

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Solution

The fourth proportional to 3,154.30, 4,725.82 and 1,921.07 is: 2,878.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.30 : 4,725.82 = 1,921.07 : x
  2. Step 2: Convert to fraction form
    3,154.30/4,725.82 = 1,921.07/x
  3. Step 3: Cross multiply
    3,154.30x = 4,725.82 × 1,921.07
  4. Step 4: Simplify right side
    3,154.30x = 9,078,631.03
  5. Step 5: Solve for x
    x = 9,078,631.03/3,154.30
  6. Step 6: Final answer
    x = 2,878.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.