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Finding the Fourth Proportional to 5,712.64, 7,896.74 and 5,480.08

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Solution

The fourth proportional to 5,712.64, 7,896.74 and 5,480.08 is: 7,575.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,712.64 : 7,896.74 = 5,480.08 : x
  2. Step 2: Convert to fraction form
    5,712.64/7,896.74 = 5,480.08/x
  3. Step 3: Cross multiply
    5,712.64x = 7,896.74 × 5,480.08
  4. Step 4: Simplify right side
    5,712.64x = 43,274,766.94
  5. Step 5: Solve for x
    x = 43,274,766.94/5,712.64
  6. Step 6: Final answer
    x = 7,575.27

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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.