Home / 4,918.46-7,378.60-1,408.32

Finding the Fourth Proportional to 4,918.46, 7,378.60 and 1,408.32

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Solution

The fourth proportional to 4,918.46, 7,378.60 and 1,408.32 is: 2,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.46 : 7,378.60 = 1,408.32 : x
  2. Step 2: Convert to fraction form
    4,918.46/7,378.60 = 1,408.32/x
  3. Step 3: Cross multiply
    4,918.46x = 7,378.60 × 1,408.32
  4. Step 4: Simplify right side
    4,918.46x = 10,391,429.95
  5. Step 5: Solve for x
    x = 10,391,429.95/4,918.46
  6. Step 6: Final answer
    x = 2,112.74

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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.