Home / 4,278.80-6,413.40-2,430.80

Finding the Fourth Proportional to 4,278.80, 6,413.40 and 2,430.80

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Solution

The fourth proportional to 4,278.80, 6,413.40 and 2,430.80 is: 3,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.80 : 6,413.40 = 2,430.80 : x
  2. Step 2: Convert to fraction form
    4,278.80/6,413.40 = 2,430.80/x
  3. Step 3: Cross multiply
    4,278.80x = 6,413.40 × 2,430.80
  4. Step 4: Simplify right side
    4,278.80x = 15,589,692.72
  5. Step 5: Solve for x
    x = 15,589,692.72/4,278.80
  6. Step 6: Final answer
    x = 3,643.47

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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.