Home / 2,415.40-3,621.86-1,180.96

Finding the Fourth Proportional to 2,415.40, 3,621.86 and 1,180.96

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Solution

The fourth proportional to 2,415.40, 3,621.86 and 1,180.96 is: 1,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.40 : 3,621.86 = 1,180.96 : x
  2. Step 2: Convert to fraction form
    2,415.40/3,621.86 = 1,180.96/x
  3. Step 3: Cross multiply
    2,415.40x = 3,621.86 × 1,180.96
  4. Step 4: Simplify right side
    2,415.40x = 4,277,271.79
  5. Step 5: Solve for x
    x = 4,277,271.79/2,415.40
  6. Step 6: Final answer
    x = 1,770.83

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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.