Home / 7,278.16-10,920.36-4,940.80

Finding the Fourth Proportional to 7,278.16, 10,920.36 and 4,940.80

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Solution

The fourth proportional to 7,278.16, 10,920.36 and 4,940.80 is: 7,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.16 : 10,920.36 = 4,940.80 : x
  2. Step 2: Convert to fraction form
    7,278.16/10,920.36 = 4,940.80/x
  3. Step 3: Cross multiply
    7,278.16x = 10,920.36 × 4,940.80
  4. Step 4: Simplify right side
    7,278.16x = 53,955,314.69
  5. Step 5: Solve for x
    x = 53,955,314.69/7,278.16
  6. Step 6: Final answer
    x = 7,413.32

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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.