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Finding the Fourth Proportional to 6,085.69, 9,128.54 and 1,981.69

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Solution

The fourth proportional to 6,085.69, 9,128.54 and 1,981.69 is: 2,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,085.69 : 9,128.54 = 1,981.69 : x
  2. Step 2: Convert to fraction form
    6,085.69/9,128.54 = 1,981.69/x
  3. Step 3: Cross multiply
    6,085.69x = 9,128.54 × 1,981.69
  4. Step 4: Simplify right side
    6,085.69x = 18,089,918.57
  5. Step 5: Solve for x
    x = 18,089,918.57/6,085.69
  6. Step 6: Final answer
    x = 2,972.53

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Double scale
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Similar ratio
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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.