Home / 3,089.80-4,638.30-1,858.60

Finding the Fourth Proportional to 3,089.80, 4,638.30 and 1,858.60

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Solution

The fourth proportional to 3,089.80, 4,638.30 and 1,858.60 is: 2,790.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.80 : 4,638.30 = 1,858.60 : x
  2. Step 2: Convert to fraction form
    3,089.80/4,638.30 = 1,858.60/x
  3. Step 3: Cross multiply
    3,089.80x = 4,638.30 × 1,858.60
  4. Step 4: Simplify right side
    3,089.80x = 8,620,744.38
  5. Step 5: Solve for x
    x = 8,620,744.38/3,089.80
  6. Step 6: Final answer
    x = 2,790.07

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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.