Home / 2,942.64-4,408.56-1,640.16

Finding the Fourth Proportional to 2,942.64, 4,408.56 and 1,640.16

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Solution

The fourth proportional to 2,942.64, 4,408.56 and 1,640.16 is: 2,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.64 : 4,408.56 = 1,640.16 : x
  2. Step 2: Convert to fraction form
    2,942.64/4,408.56 = 1,640.16/x
  3. Step 3: Cross multiply
    2,942.64x = 4,408.56 × 1,640.16
  4. Step 4: Simplify right side
    2,942.64x = 7,230,743.77
  5. Step 5: Solve for x
    x = 7,230,743.77/2,942.64
  6. Step 6: Final answer
    x = 2,457.23

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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.