Home / 3,617.20-5,425.80-2,645.20

Finding the Fourth Proportional to 3,617.20, 5,425.80 and 2,645.20

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Solution

The fourth proportional to 3,617.20, 5,425.80 and 2,645.20 is: 3,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.20 : 5,425.80 = 2,645.20 : x
  2. Step 2: Convert to fraction form
    3,617.20/5,425.80 = 2,645.20/x
  3. Step 3: Cross multiply
    3,617.20x = 5,425.80 × 2,645.20
  4. Step 4: Simplify right side
    3,617.20x = 14,352,326.16
  5. Step 5: Solve for x
    x = 14,352,326.16/3,617.20
  6. Step 6: Final answer
    x = 3,967.80

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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.