Home / 3,215.70-4,440.42-2,038.86

Finding the Fourth Proportional to 3,215.70, 4,440.42 and 2,038.86

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Solution

The fourth proportional to 3,215.70, 4,440.42 and 2,038.86 is: 2,815.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.70 : 4,440.42 = 2,038.86 : x
  2. Step 2: Convert to fraction form
    3,215.70/4,440.42 = 2,038.86/x
  3. Step 3: Cross multiply
    3,215.70x = 4,440.42 × 2,038.86
  4. Step 4: Simplify right side
    3,215.70x = 9,053,394.72
  5. Step 5: Solve for x
    x = 9,053,394.72/3,215.70
  6. Step 6: Final answer
    x = 2,815.37

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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.