Home / 3,015.53-4,153.64-2,129.79

Finding the Fourth Proportional to 3,015.53, 4,153.64 and 2,129.79

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Solution

The fourth proportional to 3,015.53, 4,153.64 and 2,129.79 is: 2,933.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.53 : 4,153.64 = 2,129.79 : x
  2. Step 2: Convert to fraction form
    3,015.53/4,153.64 = 2,129.79/x
  3. Step 3: Cross multiply
    3,015.53x = 4,153.64 × 2,129.79
  4. Step 4: Simplify right side
    3,015.53x = 8,846,370.29
  5. Step 5: Solve for x
    x = 8,846,370.29/3,015.53
  6. Step 6: Final answer
    x = 2,933.61

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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.