Home / 2,590.35-3,576.45-1,991.79

Finding the Fourth Proportional to 2,590.35, 3,576.45 and 1,991.79

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Solution

The fourth proportional to 2,590.35, 3,576.45 and 1,991.79 is: 2,750.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.35 : 3,576.45 = 1,991.79 : x
  2. Step 2: Convert to fraction form
    2,590.35/3,576.45 = 1,991.79/x
  3. Step 3: Cross multiply
    2,590.35x = 3,576.45 × 1,991.79
  4. Step 4: Simplify right side
    2,590.35x = 7,123,537.35
  5. Step 5: Solve for x
    x = 7,123,537.35/2,590.35
  6. Step 6: Final answer
    x = 2,750.03

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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.