Home / 4,089.75-6,129.47-2,215.56

Finding the Fourth Proportional to 4,089.75, 6,129.47 and 2,215.56

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Solution

The fourth proportional to 4,089.75, 6,129.47 and 2,215.56 is: 3,320.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.75 : 6,129.47 = 2,215.56 : x
  2. Step 2: Convert to fraction form
    4,089.75/6,129.47 = 2,215.56/x
  3. Step 3: Cross multiply
    4,089.75x = 6,129.47 × 2,215.56
  4. Step 4: Simplify right side
    4,089.75x = 13,580,197.48
  5. Step 5: Solve for x
    x = 13,580,197.48/4,089.75
  6. Step 6: Final answer
    x = 3,320.54

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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.