Home / 2,943.80-4,415.70-1,485.80

Finding the Fourth Proportional to 2,943.80, 4,415.70 and 1,485.80

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Solution

The fourth proportional to 2,943.80, 4,415.70 and 1,485.80 is: 2,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,943.80 : 4,415.70 = 1,485.80 : x
  2. Step 2: Convert to fraction form
    2,943.80/4,415.70 = 1,485.80/x
  3. Step 3: Cross multiply
    2,943.80x = 4,415.70 × 1,485.80
  4. Step 4: Simplify right side
    2,943.80x = 6,560,847.06
  5. Step 5: Solve for x
    x = 6,560,847.06/2,943.80
  6. Step 6: Final answer
    x = 2,228.70

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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.