Home / 3,420.80-4,720.72-2,004.16

Finding the Fourth Proportional to 3,420.80, 4,720.72 and 2,004.16

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Solution

The fourth proportional to 3,420.80, 4,720.72 and 2,004.16 is: 2,765.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.80 : 4,720.72 = 2,004.16 : x
  2. Step 2: Convert to fraction form
    3,420.80/4,720.72 = 2,004.16/x
  3. Step 3: Cross multiply
    3,420.80x = 4,720.72 × 2,004.16
  4. Step 4: Simplify right side
    3,420.80x = 9,461,078.20
  5. Step 5: Solve for x
    x = 9,461,078.20/3,420.80
  6. Step 6: Final answer
    x = 2,765.75

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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.