Home / 5,215.32-7,821.57-2,440.56

Finding the Fourth Proportional to 5,215.32, 7,821.57 and 2,440.56

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Solution

The fourth proportional to 5,215.32, 7,821.57 and 2,440.56 is: 3,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.32 : 7,821.57 = 2,440.56 : x
  2. Step 2: Convert to fraction form
    5,215.32/7,821.57 = 2,440.56/x
  3. Step 3: Cross multiply
    5,215.32x = 7,821.57 × 2,440.56
  4. Step 4: Simplify right side
    5,215.32x = 19,089,010.88
  5. Step 5: Solve for x
    x = 19,089,010.88/5,215.32
  6. Step 6: Final answer
    x = 3,660.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.