Home / 4,685.89-7,028.83-1,913.87

Finding the Fourth Proportional to 4,685.89, 7,028.83 and 1,913.87

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Solution

The fourth proportional to 4,685.89, 7,028.83 and 1,913.87 is: 2,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.89 : 7,028.83 = 1,913.87 : x
  2. Step 2: Convert to fraction form
    4,685.89/7,028.83 = 1,913.87/x
  3. Step 3: Cross multiply
    4,685.89x = 7,028.83 × 1,913.87
  4. Step 4: Simplify right side
    4,685.89x = 13,452,231.73
  5. Step 5: Solve for x
    x = 13,452,231.73/4,685.89
  6. Step 6: Final answer
    x = 2,870.80

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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.