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Finding the Fourth Proportional to 5,309.75, 7,964.96 and 1,612.28

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Solution

The fourth proportional to 5,309.75, 7,964.96 and 1,612.28 is: 2,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.75 : 7,964.96 = 1,612.28 : x
  2. Step 2: Convert to fraction form
    5,309.75/7,964.96 = 1,612.28/x
  3. Step 3: Cross multiply
    5,309.75x = 7,964.96 × 1,612.28
  4. Step 4: Simplify right side
    5,309.75x = 12,841,697.82
  5. Step 5: Solve for x
    x = 12,841,697.82/5,309.75
  6. Step 6: Final answer
    x = 2,418.51

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1.5x scale

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.