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Finding the Fourth Proportional to 7,896.80, 11,848.80 and 3,735.20

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Solution

The fourth proportional to 7,896.80, 11,848.80 and 3,735.20 is: 5,604.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.80 : 11,848.80 = 3,735.20 : x
  2. Step 2: Convert to fraction form
    7,896.80/11,848.80 = 3,735.20/x
  3. Step 3: Cross multiply
    7,896.80x = 11,848.80 × 3,735.20
  4. Step 4: Simplify right side
    7,896.80x = 44,257,637.76
  5. Step 5: Solve for x
    x = 44,257,637.76/7,896.80
  6. Step 6: Final answer
    x = 5,604.50

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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.