Home / 2,836.69-4,256.40-2,138.45

Finding the Fourth Proportional to 2,836.69, 4,256.40 and 2,138.45

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Solution

The fourth proportional to 2,836.69, 4,256.40 and 2,138.45 is: 3,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.69 : 4,256.40 = 2,138.45 : x
  2. Step 2: Convert to fraction form
    2,836.69/4,256.40 = 2,138.45/x
  3. Step 3: Cross multiply
    2,836.69x = 4,256.40 × 2,138.45
  4. Step 4: Simplify right side
    2,836.69x = 9,102,077.30
  5. Step 5: Solve for x
    x = 9,102,077.30/2,836.69
  6. Step 6: Final answer
    x = 3,208.70

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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.