Home / 4,080.89-6,121.15-1,307.70

Finding the Fourth Proportional to 4,080.89, 6,121.15 and 1,307.70

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Solution

The fourth proportional to 4,080.89, 6,121.15 and 1,307.70 is: 1,961.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080.89 : 6,121.15 = 1,307.70 : x
  2. Step 2: Convert to fraction form
    4,080.89/6,121.15 = 1,307.70/x
  3. Step 3: Cross multiply
    4,080.89x = 6,121.15 × 1,307.70
  4. Step 4: Simplify right side
    4,080.89x = 8,004,631.94
  5. Step 5: Solve for x
    x = 8,004,631.94/4,080.89
  6. Step 6: Final answer
    x = 1,961.49

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Double scale
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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.