Home / 3,122.09-4,307.36-1,845.70

Finding the Fourth Proportional to 3,122.09, 4,307.36 and 1,845.70

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Solution

The fourth proportional to 3,122.09, 4,307.36 and 1,845.70 is: 2,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.09 : 4,307.36 = 1,845.70 : x
  2. Step 2: Convert to fraction form
    3,122.09/4,307.36 = 1,845.70/x
  3. Step 3: Cross multiply
    3,122.09x = 4,307.36 × 1,845.70
  4. Step 4: Simplify right side
    3,122.09x = 7,950,094.35
  5. Step 5: Solve for x
    x = 7,950,094.35/3,122.09
  6. Step 6: Final answer
    x = 2,546.40

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Half scale
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Double scale
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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.