Home / 3,520.05-4,858.02-2,103.75

Finding the Fourth Proportional to 3,520.05, 4,858.02 and 2,103.75

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Solution

The fourth proportional to 3,520.05, 4,858.02 and 2,103.75 is: 2,903.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.05 : 4,858.02 = 2,103.75 : x
  2. Step 2: Convert to fraction form
    3,520.05/4,858.02 = 2,103.75/x
  3. Step 3: Cross multiply
    3,520.05x = 4,858.02 × 2,103.75
  4. Step 4: Simplify right side
    3,520.05x = 10,220,059.58
  5. Step 5: Solve for x
    x = 10,220,059.58/3,520.05
  6. Step 6: Final answer
    x = 2,903.38

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Half scale
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Double scale
Find fourth proportional to 3,521.05, 4,859.40 and 2,104.75
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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.