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Finding the Fourth Proportional to 5,405.94, 7,460.28 and 3,167.28

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Solution

The fourth proportional to 5,405.94, 7,460.28 and 3,167.28 is: 4,370.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.94 : 7,460.28 = 3,167.28 : x
  2. Step 2: Convert to fraction form
    5,405.94/7,460.28 = 3,167.28/x
  3. Step 3: Cross multiply
    5,405.94x = 7,460.28 × 3,167.28
  4. Step 4: Simplify right side
    5,405.94x = 23,628,795.64
  5. Step 5: Solve for x
    x = 23,628,795.64/5,405.94
  6. Step 6: Final answer
    x = 4,370.89

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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.