Home / 4,408.56-6,612.80-1,121.70

Finding the Fourth Proportional to 4,408.56, 6,612.80 and 1,121.70

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Solution

The fourth proportional to 4,408.56, 6,612.80 and 1,121.70 is: 1,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,408.56 : 6,612.80 = 1,121.70 : x
  2. Step 2: Convert to fraction form
    4,408.56/6,612.80 = 1,121.70/x
  3. Step 3: Cross multiply
    4,408.56x = 6,612.80 × 1,121.70
  4. Step 4: Simplify right side
    4,408.56x = 7,417,577.76
  5. Step 5: Solve for x
    x = 7,417,577.76/4,408.56
  6. Step 6: Final answer
    x = 1,682.54

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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.