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Finding the Fourth Proportional to 5,699.82, 7,865.64 and 3,182.16

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Solution

The fourth proportional to 5,699.82, 7,865.64 and 3,182.16 is: 4,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,699.82 : 7,865.64 = 3,182.16 : x
  2. Step 2: Convert to fraction form
    5,699.82/7,865.64 = 3,182.16/x
  3. Step 3: Cross multiply
    5,699.82x = 7,865.64 × 3,182.16
  4. Step 4: Simplify right side
    5,699.82x = 25,029,724.98
  5. Step 5: Solve for x
    x = 25,029,724.98/5,699.82
  6. Step 6: Final answer
    x = 4,391.32

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1.5x scale

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.