Home / 4,128.80-6,193.20-4,085.60

Finding the Fourth Proportional to 4,128.80, 6,193.20 and 4,085.60

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Solution

The fourth proportional to 4,128.80, 6,193.20 and 4,085.60 is: 6,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.80 : 6,193.20 = 4,085.60 : x
  2. Step 2: Convert to fraction form
    4,128.80/6,193.20 = 4,085.60/x
  3. Step 3: Cross multiply
    4,128.80x = 6,193.20 × 4,085.60
  4. Step 4: Simplify right side
    4,128.80x = 25,302,937.92
  5. Step 5: Solve for x
    x = 25,302,937.92/4,128.80
  6. Step 6: Final answer
    x = 6,128.40

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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.