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Finding the Fourth Proportional to 7,290.40, 10,930.20 and 4,944.55

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Solution

The fourth proportional to 7,290.40, 10,930.20 and 4,944.55 is: 7,413.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.40 : 10,930.20 = 4,944.55 : x
  2. Step 2: Convert to fraction form
    7,290.40/10,930.20 = 4,944.55/x
  3. Step 3: Cross multiply
    7,290.40x = 10,930.20 × 4,944.55
  4. Step 4: Simplify right side
    7,290.40x = 54,044,920.41
  5. Step 5: Solve for x
    x = 54,044,920.41/7,290.40
  6. Step 6: Final answer
    x = 7,413.16

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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.