Home / 3,109.90-4,667.40-3,085.60

Finding the Fourth Proportional to 3,109.90, 4,667.40 and 3,085.60

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Solution

The fourth proportional to 3,109.90, 4,667.40 and 3,085.60 is: 4,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.90 : 4,667.40 = 3,085.60 : x
  2. Step 2: Convert to fraction form
    3,109.90/4,667.40 = 3,085.60/x
  3. Step 3: Cross multiply
    3,109.90x = 4,667.40 × 3,085.60
  4. Step 4: Simplify right side
    3,109.90x = 14,401,729.44
  5. Step 5: Solve for x
    x = 14,401,729.44/3,109.90
  6. Step 6: Final answer
    x = 4,630.93

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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.