Home / 2,900.22-4,003.80-2,235.60

Finding the Fourth Proportional to 2,900.22, 4,003.80 and 2,235.60

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Solution

The fourth proportional to 2,900.22, 4,003.80 and 2,235.60 is: 3,086.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.22 : 4,003.80 = 2,235.60 : x
  2. Step 2: Convert to fraction form
    2,900.22/4,003.80 = 2,235.60/x
  3. Step 3: Cross multiply
    2,900.22x = 4,003.80 × 2,235.60
  4. Step 4: Simplify right side
    2,900.22x = 8,950,895.28
  5. Step 5: Solve for x
    x = 8,950,895.28/2,900.22
  6. Step 6: Final answer
    x = 3,086.28

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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.