Home / 2,387.21-3,580.82-1,947.99

Finding the Fourth Proportional to 2,387.21, 3,580.82 and 1,947.99

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Solution

The fourth proportional to 2,387.21, 3,580.82 and 1,947.99 is: 2,921.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.21 : 3,580.82 = 1,947.99 : x
  2. Step 2: Convert to fraction form
    2,387.21/3,580.82 = 1,947.99/x
  3. Step 3: Cross multiply
    2,387.21x = 3,580.82 × 1,947.99
  4. Step 4: Simplify right side
    2,387.21x = 6,975,391.81
  5. Step 5: Solve for x
    x = 6,975,391.81/2,387.21
  6. Step 6: Final answer
    x = 2,921.99

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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.