Home / 8,455.36-12,682.75-2,215.32

Finding the Fourth Proportional to 8,455.36, 12,682.75 and 2,215.32

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Solution

The fourth proportional to 8,455.36, 12,682.75 and 2,215.32 is: 3,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.36 : 12,682.75 = 2,215.32 : x
  2. Step 2: Convert to fraction form
    8,455.36/12,682.75 = 2,215.32/x
  3. Step 3: Cross multiply
    8,455.36x = 12,682.75 × 2,215.32
  4. Step 4: Simplify right side
    8,455.36x = 28,096,414.03
  5. Step 5: Solve for x
    x = 28,096,414.03/8,455.36
  6. Step 6: Final answer
    x = 3,322.91

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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.