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Finding the Fourth Proportional to 5,712.50, 7,883.52 and 3,228.50

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Solution

The fourth proportional to 5,712.50, 7,883.52 and 3,228.50 is: 4,455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,712.50 : 7,883.52 = 3,228.50 : x
  2. Step 2: Convert to fraction form
    5,712.50/7,883.52 = 3,228.50/x
  3. Step 3: Cross multiply
    5,712.50x = 7,883.52 × 3,228.50
  4. Step 4: Simplify right side
    5,712.50x = 25,451,944.32
  5. Step 5: Solve for x
    x = 25,451,944.32/5,712.50
  6. Step 6: Final answer
    x = 4,455.48

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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.