Home / 3,858.59-5,787.95-1,261.50

Finding the Fourth Proportional to 3,858.59, 5,787.95 and 1,261.50

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Solution

The fourth proportional to 3,858.59, 5,787.95 and 1,261.50 is: 1,892.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.59 : 5,787.95 = 1,261.50 : x
  2. Step 2: Convert to fraction form
    3,858.59/5,787.95 = 1,261.50/x
  3. Step 3: Cross multiply
    3,858.59x = 5,787.95 × 1,261.50
  4. Step 4: Simplify right side
    3,858.59x = 7,301,492.62
  5. Step 5: Solve for x
    x = 7,301,492.62/3,858.59
  6. Step 6: Final answer
    x = 1,892.27

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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.