Home / 4,920.48-6,774.72-4,172.88

Finding the Fourth Proportional to 4,920.48, 6,774.72 and 4,172.88

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Solution

The fourth proportional to 4,920.48, 6,774.72 and 4,172.88 is: 5,745.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.48 : 6,774.72 = 4,172.88 : x
  2. Step 2: Convert to fraction form
    4,920.48/6,774.72 = 4,172.88/x
  3. Step 3: Cross multiply
    4,920.48x = 6,774.72 × 4,172.88
  4. Step 4: Simplify right side
    4,920.48x = 28,270,093.59
  5. Step 5: Solve for x
    x = 28,270,093.59/4,920.48
  6. Step 6: Final answer
    x = 5,745.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.