Home / 3,072.40-4,605.90-1,840.30

Finding the Fourth Proportional to 3,072.40, 4,605.90 and 1,840.30

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Solution

The fourth proportional to 3,072.40, 4,605.90 and 1,840.30 is: 2,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.40 : 4,605.90 = 1,840.30 : x
  2. Step 2: Convert to fraction form
    3,072.40/4,605.90 = 1,840.30/x
  3. Step 3: Cross multiply
    3,072.40x = 4,605.90 × 1,840.30
  4. Step 4: Simplify right side
    3,072.40x = 8,476,237.77
  5. Step 5: Solve for x
    x = 8,476,237.77/3,072.40
  6. Step 6: Final answer
    x = 2,758.83

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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.