Home / 1,854.28-2,558.35-1,191.90

Finding the Fourth Proportional to 1,854.28, 2,558.35 and 1,191.90

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Solution

The fourth proportional to 1,854.28, 2,558.35 and 1,191.90 is: 1,644.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,854.28 : 2,558.35 = 1,191.90 : x
  2. Step 2: Convert to fraction form
    1,854.28/2,558.35 = 1,191.90/x
  3. Step 3: Cross multiply
    1,854.28x = 2,558.35 × 1,191.90
  4. Step 4: Simplify right side
    1,854.28x = 3,049,297.37
  5. Step 5: Solve for x
    x = 3,049,297.37/1,854.28
  6. Step 6: Final answer
    x = 1,644.46

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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.