Home / 2,165.48-3,245.21-1,123.32

Finding the Fourth Proportional to 2,165.48, 3,245.21 and 1,123.32

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Solution

The fourth proportional to 2,165.48, 3,245.21 and 1,123.32 is: 1,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.48 : 3,245.21 = 1,123.32 : x
  2. Step 2: Convert to fraction form
    2,165.48/3,245.21 = 1,123.32/x
  3. Step 3: Cross multiply
    2,165.48x = 3,245.21 × 1,123.32
  4. Step 4: Simplify right side
    2,165.48x = 3,645,403.68
  5. Step 5: Solve for x
    x = 3,645,403.68/2,165.48
  6. Step 6: Final answer
    x = 1,683.42

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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.