Home / 4,938.20-7,412.70-3,091.40

Finding the Fourth Proportional to 4,938.20, 7,412.70 and 3,091.40

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Solution

The fourth proportional to 4,938.20, 7,412.70 and 3,091.40 is: 4,640.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.20 : 7,412.70 = 3,091.40 : x
  2. Step 2: Convert to fraction form
    4,938.20/7,412.70 = 3,091.40/x
  3. Step 3: Cross multiply
    4,938.20x = 7,412.70 × 3,091.40
  4. Step 4: Simplify right side
    4,938.20x = 22,915,620.78
  5. Step 5: Solve for x
    x = 22,915,620.78/4,938.20
  6. Step 6: Final answer
    x = 4,640.48

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1.5x scale

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.