Home / 2,290.72-3,436.08-1,261.60

Finding the Fourth Proportional to 2,290.72, 3,436.08 and 1,261.60

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Solution

The fourth proportional to 2,290.72, 3,436.08 and 1,261.60 is: 1,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.72 : 3,436.08 = 1,261.60 : x
  2. Step 2: Convert to fraction form
    2,290.72/3,436.08 = 1,261.60/x
  3. Step 3: Cross multiply
    2,290.72x = 3,436.08 × 1,261.60
  4. Step 4: Simplify right side
    2,290.72x = 4,334,958.53
  5. Step 5: Solve for x
    x = 4,334,958.53/2,290.72
  6. Step 6: Final answer
    x = 1,892.40

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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.