Home / 3,787.21-5,681.31-1,322.74

Finding the Fourth Proportional to 3,787.21, 5,681.31 and 1,322.74

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Solution

The fourth proportional to 3,787.21, 5,681.31 and 1,322.74 is: 1,984.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.21 : 5,681.31 = 1,322.74 : x
  2. Step 2: Convert to fraction form
    3,787.21/5,681.31 = 1,322.74/x
  3. Step 3: Cross multiply
    3,787.21x = 5,681.31 × 1,322.74
  4. Step 4: Simplify right side
    3,787.21x = 7,514,895.99
  5. Step 5: Solve for x
    x = 7,514,895.99/3,787.21
  6. Step 6: Final answer
    x = 1,984.28

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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.