Home / 2,315.21-3,473.10-1,219.64

Finding the Fourth Proportional to 2,315.21, 3,473.10 and 1,219.64

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Solution

The fourth proportional to 2,315.21, 3,473.10 and 1,219.64 is: 1,829.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.21 : 3,473.10 = 1,219.64 : x
  2. Step 2: Convert to fraction form
    2,315.21/3,473.10 = 1,219.64/x
  3. Step 3: Cross multiply
    2,315.21x = 3,473.10 × 1,219.64
  4. Step 4: Simplify right side
    2,315.21x = 4,235,914.32
  5. Step 5: Solve for x
    x = 4,235,914.32/2,315.21
  6. Step 6: Final answer
    x = 1,829.61

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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.