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Finding the Fourth Proportional to 3,754.72, 5,630.92 and 1,415.06

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Solution

The fourth proportional to 3,754.72, 5,630.92 and 1,415.06 is: 2,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,754.72 : 5,630.92 = 1,415.06 : x
  2. Step 2: Convert to fraction form
    3,754.72/5,630.92 = 1,415.06/x
  3. Step 3: Cross multiply
    3,754.72x = 5,630.92 × 1,415.06
  4. Step 4: Simplify right side
    3,754.72x = 7,968,089.66
  5. Step 5: Solve for x
    x = 7,968,089.66/3,754.72
  6. Step 6: Final answer
    x = 2,122.15

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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.