Home / 2,858.79-3,945-1,599.84

Finding the Fourth Proportional to 2,858.79, 3,945 and 1,599.84

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Solution

The fourth proportional to 2,858.79, 3,945 and 1,599.84 is: 2,207.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.79 : 3,945 = 1,599.84 : x
  2. Step 2: Convert to fraction form
    2,858.79/3,945 = 1,599.84/x
  3. Step 3: Cross multiply
    2,858.79x = 3,945 × 1,599.84
  4. Step 4: Simplify right side
    2,858.79x = 6,311,368.80
  5. Step 5: Solve for x
    x = 6,311,368.80/2,858.79
  6. Step 6: Final answer
    x = 2,207.71

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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.