Home / 2,836.18-3,915.93-2,129.59

Finding the Fourth Proportional to 2,836.18, 3,915.93 and 2,129.59

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Solution

The fourth proportional to 2,836.18, 3,915.93 and 2,129.59 is: 2,940.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.18 : 3,915.93 = 2,129.59 : x
  2. Step 2: Convert to fraction form
    2,836.18/3,915.93 = 2,129.59/x
  3. Step 3: Cross multiply
    2,836.18x = 3,915.93 × 2,129.59
  4. Step 4: Simplify right side
    2,836.18x = 8,339,325.37
  5. Step 5: Solve for x
    x = 8,339,325.37/2,836.18
  6. Step 6: Final answer
    x = 2,940.34

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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.