Home / 3,081.60-4,623.36-1,438.08

Finding the Fourth Proportional to 3,081.60, 4,623.36 and 1,438.08

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Solution

The fourth proportional to 3,081.60, 4,623.36 and 1,438.08 is: 2,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.60 : 4,623.36 = 1,438.08 : x
  2. Step 2: Convert to fraction form
    3,081.60/4,623.36 = 1,438.08/x
  3. Step 3: Cross multiply
    3,081.60x = 4,623.36 × 1,438.08
  4. Step 4: Simplify right side
    3,081.60x = 6,648,761.55
  5. Step 5: Solve for x
    x = 6,648,761.55/3,081.60
  6. Step 6: Final answer
    x = 2,157.57

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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.