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Finding the Fourth Proportional to 3,266.51, 4,507.51 and 1,921.90

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Solution

The fourth proportional to 3,266.51, 4,507.51 and 1,921.90 is: 2,652.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,266.51 : 4,507.51 = 1,921.90 : x
  2. Step 2: Convert to fraction form
    3,266.51/4,507.51 = 1,921.90/x
  3. Step 3: Cross multiply
    3,266.51x = 4,507.51 × 1,921.90
  4. Step 4: Simplify right side
    3,266.51x = 8,662,973.51
  5. Step 5: Solve for x
    x = 8,662,973.51/3,266.51
  6. Step 6: Final answer
    x = 2,652.06

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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.