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Finding the Fourth Proportional to 7,700.96, 11,557.16 and 3,321.44

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Solution

The fourth proportional to 7,700.96, 11,557.16 and 3,321.44 is: 4,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700.96 : 11,557.16 = 3,321.44 : x
  2. Step 2: Convert to fraction form
    7,700.96/11,557.16 = 3,321.44/x
  3. Step 3: Cross multiply
    7,700.96x = 11,557.16 × 3,321.44
  4. Step 4: Simplify right side
    7,700.96x = 38,386,413.51
  5. Step 5: Solve for x
    x = 38,386,413.51/7,700.96
  6. Step 6: Final answer
    x = 4,984.63

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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.