Home / 3,036.38-4,188.30-1,855.40

Finding the Fourth Proportional to 3,036.38, 4,188.30 and 1,855.40

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Solution

The fourth proportional to 3,036.38, 4,188.30 and 1,855.40 is: 2,559.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,036.38 : 4,188.30 = 1,855.40 : x
  2. Step 2: Convert to fraction form
    3,036.38/4,188.30 = 1,855.40/x
  3. Step 3: Cross multiply
    3,036.38x = 4,188.30 × 1,855.40
  4. Step 4: Simplify right side
    3,036.38x = 7,770,950.88
  5. Step 5: Solve for x
    x = 7,770,950.88/3,036.38
  6. Step 6: Final answer
    x = 2,559.29

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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.