Home / 3,680.82-5,521.58-1,215.05

Finding the Fourth Proportional to 3,680.82, 5,521.58 and 1,215.05

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Solution

The fourth proportional to 3,680.82, 5,521.58 and 1,215.05 is: 1,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.82 : 5,521.58 = 1,215.05 : x
  2. Step 2: Convert to fraction form
    3,680.82/5,521.58 = 1,215.05/x
  3. Step 3: Cross multiply
    3,680.82x = 5,521.58 × 1,215.05
  4. Step 4: Simplify right side
    3,680.82x = 6,708,962.10
  5. Step 5: Solve for x
    x = 6,708,962.10/3,680.82
  6. Step 6: Final answer
    x = 1,822.68

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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.