Home / 2,161.42-2,982.99-1,415.56

Finding the Fourth Proportional to 2,161.42, 2,982.99 and 1,415.56

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Solution

The fourth proportional to 2,161.42, 2,982.99 and 1,415.56 is: 1,953.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.42 : 2,982.99 = 1,415.56 : x
  2. Step 2: Convert to fraction form
    2,161.42/2,982.99 = 1,415.56/x
  3. Step 3: Cross multiply
    2,161.42x = 2,982.99 × 1,415.56
  4. Step 4: Simplify right side
    2,161.42x = 4,222,601.32
  5. Step 5: Solve for x
    x = 4,222,601.32/2,161.42
  6. Step 6: Final answer
    x = 1,953.62

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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.