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Finding the Fourth Proportional to 2,990.58, 4,134.22 and 2,741.51

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Solution

The fourth proportional to 2,990.58, 4,134.22 and 2,741.51 is: 3,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.58 : 4,134.22 = 2,741.51 : x
  2. Step 2: Convert to fraction form
    2,990.58/4,134.22 = 2,741.51/x
  3. Step 3: Cross multiply
    2,990.58x = 4,134.22 × 2,741.51
  4. Step 4: Simplify right side
    2,990.58x = 11,333,977.95
  5. Step 5: Solve for x
    x = 11,333,977.95/2,990.58
  6. Step 6: Final answer
    x = 3,789.89

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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.