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Finding the Fourth Proportional to 5,164.45, 7,746.80 and 1,268.89

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Solution

The fourth proportional to 5,164.45, 7,746.80 and 1,268.89 is: 1,903.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.45 : 7,746.80 = 1,268.89 : x
  2. Step 2: Convert to fraction form
    5,164.45/7,746.80 = 1,268.89/x
  3. Step 3: Cross multiply
    5,164.45x = 7,746.80 × 1,268.89
  4. Step 4: Simplify right side
    5,164.45x = 9,829,837.05
  5. Step 5: Solve for x
    x = 9,829,837.05/5,164.45
  6. Step 6: Final answer
    x = 1,903.37

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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.