Home / 3,120.58-4,297.22-2,788.89

Finding the Fourth Proportional to 3,120.58, 4,297.22 and 2,788.89

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Solution

The fourth proportional to 3,120.58, 4,297.22 and 2,788.89 is: 3,840.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.58 : 4,297.22 = 2,788.89 : x
  2. Step 2: Convert to fraction form
    3,120.58/4,297.22 = 2,788.89/x
  3. Step 3: Cross multiply
    3,120.58x = 4,297.22 × 2,788.89
  4. Step 4: Simplify right side
    3,120.58x = 11,984,438.46
  5. Step 5: Solve for x
    x = 11,984,438.46/3,120.58
  6. Step 6: Final answer
    x = 3,840.45

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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.