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Finding the Fourth Proportional to 3,664.82, 5,497.22 and 891.51

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Solution

The fourth proportional to 3,664.82, 5,497.22 and 891.51 is: 1,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.82 : 5,497.22 = 891.51 : x
  2. Step 2: Convert to fraction form
    3,664.82/5,497.22 = 891.51/x
  3. Step 3: Cross multiply
    3,664.82x = 5,497.22 × 891.51
  4. Step 4: Simplify right side
    3,664.82x = 4,900,822.14
  5. Step 5: Solve for x
    x = 4,900,822.14/3,664.82
  6. Step 6: Final answer
    x = 1,337.26

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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.