Home / 1,921.43-2,884.85-1,888.58

Finding the Fourth Proportional to 1,921.43, 2,884.85 and 1,888.58

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Solution

The fourth proportional to 1,921.43, 2,884.85 and 1,888.58 is: 2,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.43 : 2,884.85 = 1,888.58 : x
  2. Step 2: Convert to fraction form
    1,921.43/2,884.85 = 1,888.58/x
  3. Step 3: Cross multiply
    1,921.43x = 2,884.85 × 1,888.58
  4. Step 4: Simplify right side
    1,921.43x = 5,448,270.01
  5. Step 5: Solve for x
    x = 5,448,270.01/1,921.43
  6. Step 6: Final answer
    x = 2,835.53

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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.