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Finding the Fourth Proportional to 1,762.32, 2,431.41 and 1,172.22

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Solution

The fourth proportional to 1,762.32, 2,431.41 and 1,172.22 is: 1,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.32 : 2,431.41 = 1,172.22 : x
  2. Step 2: Convert to fraction form
    1,762.32/2,431.41 = 1,172.22/x
  3. Step 3: Cross multiply
    1,762.32x = 2,431.41 × 1,172.22
  4. Step 4: Simplify right side
    1,762.32x = 2,850,147.43
  5. Step 5: Solve for x
    x = 2,850,147.43/1,762.32
  6. Step 6: Final answer
    x = 1,617.27

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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.