Home / 3,780.16-5,661.28-2,388.64

Finding the Fourth Proportional to 3,780.16, 5,661.28 and 2,388.64

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Solution

The fourth proportional to 3,780.16, 5,661.28 and 2,388.64 is: 3,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.16 : 5,661.28 = 2,388.64 : x
  2. Step 2: Convert to fraction form
    3,780.16/5,661.28 = 2,388.64/x
  3. Step 3: Cross multiply
    3,780.16x = 5,661.28 × 2,388.64
  4. Step 4: Simplify right side
    3,780.16x = 13,522,759.86
  5. Step 5: Solve for x
    x = 13,522,759.86/3,780.16
  6. Step 6: Final answer
    x = 3,577.30

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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.