Home / 3,307.69-4,563.97-2,128.60

Finding the Fourth Proportional to 3,307.69, 4,563.97 and 2,128.60

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Solution

The fourth proportional to 3,307.69, 4,563.97 and 2,128.60 is: 2,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.69 : 4,563.97 = 2,128.60 : x
  2. Step 2: Convert to fraction form
    3,307.69/4,563.97 = 2,128.60/x
  3. Step 3: Cross multiply
    3,307.69x = 4,563.97 × 2,128.60
  4. Step 4: Simplify right side
    3,307.69x = 9,714,866.54
  5. Step 5: Solve for x
    x = 9,714,866.54/3,307.69
  6. Step 6: Final answer
    x = 2,937.05

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.