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Finding the Fourth Proportional to 5,309.51, 7,964.28 and 2,387.09

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Solution

The fourth proportional to 5,309.51, 7,964.28 and 2,387.09 is: 3,580.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.51 : 7,964.28 = 2,387.09 : x
  2. Step 2: Convert to fraction form
    5,309.51/7,964.28 = 2,387.09/x
  3. Step 3: Cross multiply
    5,309.51x = 7,964.28 × 2,387.09
  4. Step 4: Simplify right side
    5,309.51x = 19,011,413.32
  5. Step 5: Solve for x
    x = 19,011,413.32/5,309.51
  6. Step 6: Final answer
    x = 3,580.64

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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.