Home / 3,680.16-5,520.44-1,215.20

Finding the Fourth Proportional to 3,680.16, 5,520.44 and 1,215.20

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Solution

The fourth proportional to 3,680.16, 5,520.44 and 1,215.20 is: 1,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.16 : 5,520.44 = 1,215.20 : x
  2. Step 2: Convert to fraction form
    3,680.16/5,520.44 = 1,215.20/x
  3. Step 3: Cross multiply
    3,680.16x = 5,520.44 × 1,215.20
  4. Step 4: Simplify right side
    3,680.16x = 6,708,438.69
  5. Step 5: Solve for x
    x = 6,708,438.69/3,680.16
  6. Step 6: Final answer
    x = 1,822.87

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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.