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Finding the Fourth Proportional to 5,309.98, 7,965.15 and 2,388.29

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Solution

The fourth proportional to 5,309.98, 7,965.15 and 2,388.29 is: 3,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.98 : 7,965.15 = 2,388.29 : x
  2. Step 2: Convert to fraction form
    5,309.98/7,965.15 = 2,388.29/x
  3. Step 3: Cross multiply
    5,309.98x = 7,965.15 × 2,388.29
  4. Step 4: Simplify right side
    5,309.98x = 19,023,088.09
  5. Step 5: Solve for x
    x = 19,023,088.09/5,309.98
  6. Step 6: Final answer
    x = 3,582.52

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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.