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Finding the Fourth Proportional to 1,372.32, 1,895.16 and 1,174.68

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Solution

The fourth proportional to 1,372.32, 1,895.16 and 1,174.68 is: 1,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.32 : 1,895.16 = 1,174.68 : x
  2. Step 2: Convert to fraction form
    1,372.32/1,895.16 = 1,174.68/x
  3. Step 3: Cross multiply
    1,372.32x = 1,895.16 × 1,174.68
  4. Step 4: Simplify right side
    1,372.32x = 2,226,206.55
  5. Step 5: Solve for x
    x = 2,226,206.55/1,372.32
  6. Step 6: Final answer
    x = 1,622.22

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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.