Home / 4,945.80-7,420.68-3,636.18

Finding the Fourth Proportional to 4,945.80, 7,420.68 and 3,636.18

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Solution

The fourth proportional to 4,945.80, 7,420.68 and 3,636.18 is: 5,455.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.80 : 7,420.68 = 3,636.18 : x
  2. Step 2: Convert to fraction form
    4,945.80/7,420.68 = 3,636.18/x
  3. Step 3: Cross multiply
    4,945.80x = 7,420.68 × 3,636.18
  4. Step 4: Simplify right side
    4,945.80x = 26,982,928.20
  5. Step 5: Solve for x
    x = 26,982,928.20/4,945.80
  6. Step 6: Final answer
    x = 5,455.72

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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.