Home / 4,413.80-6,620.70-1,126.90

Finding the Fourth Proportional to 4,413.80, 6,620.70 and 1,126.90

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Solution

The fourth proportional to 4,413.80, 6,620.70 and 1,126.90 is: 1,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,413.80 : 6,620.70 = 1,126.90 : x
  2. Step 2: Convert to fraction form
    4,413.80/6,620.70 = 1,126.90/x
  3. Step 3: Cross multiply
    4,413.80x = 6,620.70 × 1,126.90
  4. Step 4: Simplify right side
    4,413.80x = 7,460,850.28
  5. Step 5: Solve for x
    x = 7,460,850.28/4,413.80
  6. Step 6: Final answer
    x = 1,690.35

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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.