Home / 2,161.20-2,975.58-1,828.92

Finding the Fourth Proportional to 2,161.20, 2,975.58 and 1,828.92

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Solution

The fourth proportional to 2,161.20, 2,975.58 and 1,828.92 is: 2,518.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.20 : 2,975.58 = 1,828.92 : x
  2. Step 2: Convert to fraction form
    2,161.20/2,975.58 = 1,828.92/x
  3. Step 3: Cross multiply
    2,161.20x = 2,975.58 × 1,828.92
  4. Step 4: Simplify right side
    2,161.20x = 5,442,097.77
  5. Step 5: Solve for x
    x = 5,442,097.77/2,161.20
  6. Step 6: Final answer
    x = 2,518.09

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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.