Home / 2,387.12-3,294.01-1,392.48

Finding the Fourth Proportional to 2,387.12, 3,294.01 and 1,392.48

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Solution

The fourth proportional to 2,387.12, 3,294.01 and 1,392.48 is: 1,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.12 : 3,294.01 = 1,392.48 : x
  2. Step 2: Convert to fraction form
    2,387.12/3,294.01 = 1,392.48/x
  3. Step 3: Cross multiply
    2,387.12x = 3,294.01 × 1,392.48
  4. Step 4: Simplify right side
    2,387.12x = 4,586,857.14
  5. Step 5: Solve for x
    x = 4,586,857.14/2,387.12
  6. Step 6: Final answer
    x = 1,921.50

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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.