Home / 3,639.44-5,460.72-2,079.20

Finding the Fourth Proportional to 3,639.44, 5,460.72 and 2,079.20

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Solution

The fourth proportional to 3,639.44, 5,460.72 and 2,079.20 is: 3,119.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.44 : 5,460.72 = 2,079.20 : x
  2. Step 2: Convert to fraction form
    3,639.44/5,460.72 = 2,079.20/x
  3. Step 3: Cross multiply
    3,639.44x = 5,460.72 × 2,079.20
  4. Step 4: Simplify right side
    3,639.44x = 11,353,929.02
  5. Step 5: Solve for x
    x = 11,353,929.02/3,639.44
  6. Step 6: Final answer
    x = 3,119.69

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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.