Home / 3,787.74-5,681.79-2,145.60

Finding the Fourth Proportional to 3,787.74, 5,681.79 and 2,145.60

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Solution

The fourth proportional to 3,787.74, 5,681.79 and 2,145.60 is: 3,218.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.74 : 5,681.79 = 2,145.60 : x
  2. Step 2: Convert to fraction form
    3,787.74/5,681.79 = 2,145.60/x
  3. Step 3: Cross multiply
    3,787.74x = 5,681.79 × 2,145.60
  4. Step 4: Simplify right side
    3,787.74x = 12,190,848.62
  5. Step 5: Solve for x
    x = 12,190,848.62/3,787.74
  6. Step 6: Final answer
    x = 3,218.50

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1.5x scale

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.