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Finding the Fourth Proportional to 3,640.16, 5,460.92 and 1,174.72

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Solution

The fourth proportional to 3,640.16, 5,460.92 and 1,174.72 is: 1,762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.16 : 5,460.92 = 1,174.72 : x
  2. Step 2: Convert to fraction form
    3,640.16/5,460.92 = 1,174.72/x
  3. Step 3: Cross multiply
    3,640.16x = 5,460.92 × 1,174.72
  4. Step 4: Simplify right side
    3,640.16x = 6,415,046.07
  5. Step 5: Solve for x
    x = 6,415,046.07/3,640.16
  6. Step 6: Final answer
    x = 1,762.30

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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.