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Finding the Fourth Proportional to 7,869.36, 10,860.36 and 4,725.48

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Solution

The fourth proportional to 7,869.36, 10,860.36 and 4,725.48 is: 6,521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.36 : 10,860.36 = 4,725.48 : x
  2. Step 2: Convert to fraction form
    7,869.36/10,860.36 = 4,725.48/x
  3. Step 3: Cross multiply
    7,869.36x = 10,860.36 × 4,725.48
  4. Step 4: Simplify right side
    7,869.36x = 51,320,413.97
  5. Step 5: Solve for x
    x = 51,320,413.97/7,869.36
  6. Step 6: Final answer
    x = 6,521.55

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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.