Home / 3,520.56-4,858.48-1,948.80

Finding the Fourth Proportional to 3,520.56, 4,858.48 and 1,948.80

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Solution

The fourth proportional to 3,520.56, 4,858.48 and 1,948.80 is: 2,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.56 : 4,858.48 = 1,948.80 : x
  2. Step 2: Convert to fraction form
    3,520.56/4,858.48 = 1,948.80/x
  3. Step 3: Cross multiply
    3,520.56x = 4,858.48 × 1,948.80
  4. Step 4: Simplify right side
    3,520.56x = 9,468,205.82
  5. Step 5: Solve for x
    x = 9,468,205.82/3,520.56
  6. Step 6: Final answer
    x = 2,689.40

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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.