Home / 3,556.84-4,908.50-1,985

Finding the Fourth Proportional to 3,556.84, 4,908.50 and 1,985

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Solution

The fourth proportional to 3,556.84, 4,908.50 and 1,985 is: 2,739.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.84 : 4,908.50 = 1,985 : x
  2. Step 2: Convert to fraction form
    3,556.84/4,908.50 = 1,985/x
  3. Step 3: Cross multiply
    3,556.84x = 4,908.50 × 1,985
  4. Step 4: Simplify right side
    3,556.84x = 9,743,372.50
  5. Step 5: Solve for x
    x = 9,743,372.50/3,556.84
  6. Step 6: Final answer
    x = 2,739.33

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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.