Home / 2,590.70-3,576.24-1,961.40

Finding the Fourth Proportional to 2,590.70, 3,576.24 and 1,961.40

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Solution

The fourth proportional to 2,590.70, 3,576.24 and 1,961.40 is: 2,707.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.70 : 3,576.24 = 1,961.40 : x
  2. Step 2: Convert to fraction form
    2,590.70/3,576.24 = 1,961.40/x
  3. Step 3: Cross multiply
    2,590.70x = 3,576.24 × 1,961.40
  4. Step 4: Simplify right side
    2,590.70x = 7,014,443.19
  5. Step 5: Solve for x
    x = 7,014,443.19/2,590.70
  6. Step 6: Final answer
    x = 2,707.55

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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.