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Finding the Fourth Proportional to 5,805.64, 8,015.85 and 5,128.27

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Solution

The fourth proportional to 5,805.64, 8,015.85 and 5,128.27 is: 7,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,805.64 : 8,015.85 = 5,128.27 : x
  2. Step 2: Convert to fraction form
    5,805.64/8,015.85 = 5,128.27/x
  3. Step 3: Cross multiply
    5,805.64x = 8,015.85 × 5,128.27
  4. Step 4: Simplify right side
    5,805.64x = 41,107,443.08
  5. Step 5: Solve for x
    x = 41,107,443.08/5,805.64
  6. Step 6: Final answer
    x = 7,080.60

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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.