Home / 3,215.36-4,435.84-2,165.60

Finding the Fourth Proportional to 3,215.36, 4,435.84 and 2,165.60

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Solution

The fourth proportional to 3,215.36, 4,435.84 and 2,165.60 is: 2,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.36 : 4,435.84 = 2,165.60 : x
  2. Step 2: Convert to fraction form
    3,215.36/4,435.84 = 2,165.60/x
  3. Step 3: Cross multiply
    3,215.36x = 4,435.84 × 2,165.60
  4. Step 4: Simplify right side
    3,215.36x = 9,606,255.10
  5. Step 5: Solve for x
    x = 9,606,255.10/3,215.36
  6. Step 6: Final answer
    x = 2,987.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.