Home / 9,413.93-12,990.94-5,325.30

Finding the Fourth Proportional to 9,413.93, 12,990.94 and 5,325.30

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Solution

The fourth proportional to 9,413.93, 12,990.94 and 5,325.30 is: 7,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.93 : 12,990.94 = 5,325.30 : x
  2. Step 2: Convert to fraction form
    9,413.93/12,990.94 = 5,325.30/x
  3. Step 3: Cross multiply
    9,413.93x = 12,990.94 × 5,325.30
  4. Step 4: Simplify right side
    9,413.93x = 69,180,639.47
  5. Step 5: Solve for x
    x = 69,180,639.47/9,413.93
  6. Step 6: Final answer
    x = 7,348.76

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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.