Home / 2,310.20-3,465.30-1,388.60

Finding the Fourth Proportional to 2,310.20, 3,465.30 and 1,388.60

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Solution

The fourth proportional to 2,310.20, 3,465.30 and 1,388.60 is: 2,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.20 : 3,465.30 = 1,388.60 : x
  2. Step 2: Convert to fraction form
    2,310.20/3,465.30 = 1,388.60/x
  3. Step 3: Cross multiply
    2,310.20x = 3,465.30 × 1,388.60
  4. Step 4: Simplify right side
    2,310.20x = 4,811,915.58
  5. Step 5: Solve for x
    x = 4,811,915.58/2,310.20
  6. Step 6: Final answer
    x = 2,082.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.