Home / 3,321.12-4,583.56-2,145.60

Finding the Fourth Proportional to 3,321.12, 4,583.56 and 2,145.60

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Solution

The fourth proportional to 3,321.12, 4,583.56 and 2,145.60 is: 2,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.12 : 4,583.56 = 2,145.60 : x
  2. Step 2: Convert to fraction form
    3,321.12/4,583.56 = 2,145.60/x
  3. Step 3: Cross multiply
    3,321.12x = 4,583.56 × 2,145.60
  4. Step 4: Simplify right side
    3,321.12x = 9,834,486.34
  5. Step 5: Solve for x
    x = 9,834,486.34/3,321.12
  6. Step 6: Final answer
    x = 2,961.20

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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.