Home / 3,557.90-4,910.12-1,986.10

Finding the Fourth Proportional to 3,557.90, 4,910.12 and 1,986.10

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Solution

The fourth proportional to 3,557.90, 4,910.12 and 1,986.10 is: 2,740.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.90 : 4,910.12 = 1,986.10 : x
  2. Step 2: Convert to fraction form
    3,557.90/4,910.12 = 1,986.10/x
  3. Step 3: Cross multiply
    3,557.90x = 4,910.12 × 1,986.10
  4. Step 4: Simplify right side
    3,557.90x = 9,751,989.33
  5. Step 5: Solve for x
    x = 9,751,989.33/3,557.90
  6. Step 6: Final answer
    x = 2,740.94

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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.