Home / 3,870.60-5,805.45-1,677.54

Finding the Fourth Proportional to 3,870.60, 5,805.45 and 1,677.54

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Solution

The fourth proportional to 3,870.60, 5,805.45 and 1,677.54 is: 2,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.60 : 5,805.45 = 1,677.54 : x
  2. Step 2: Convert to fraction form
    3,870.60/5,805.45 = 1,677.54/x
  3. Step 3: Cross multiply
    3,870.60x = 5,805.45 × 1,677.54
  4. Step 4: Simplify right side
    3,870.60x = 9,738,874.59
  5. Step 5: Solve for x
    x = 9,738,874.59/3,870.60
  6. Step 6: Final answer
    x = 2,516.11

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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.