Home / 3,858.41-5,787.65-1,225.86

Finding the Fourth Proportional to 3,858.41, 5,787.65 and 1,225.86

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Solution

The fourth proportional to 3,858.41, 5,787.65 and 1,225.86 is: 1,838.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.41 : 5,787.65 = 1,225.86 : x
  2. Step 2: Convert to fraction form
    3,858.41/5,787.65 = 1,225.86/x
  3. Step 3: Cross multiply
    3,858.41x = 5,787.65 × 1,225.86
  4. Step 4: Simplify right side
    3,858.41x = 7,094,848.63
  5. Step 5: Solve for x
    x = 7,094,848.63/3,858.41
  6. Step 6: Final answer
    x = 1,838.80

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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.