Home / 1,678.53-2,519.37-899.22

Finding the Fourth Proportional to 1,678.53, 2,519.37 and 899.22

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Solution

The fourth proportional to 1,678.53, 2,519.37 and 899.22 is: 1,349.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.53 : 2,519.37 = 899.22 : x
  2. Step 2: Convert to fraction form
    1,678.53/2,519.37 = 899.22/x
  3. Step 3: Cross multiply
    1,678.53x = 2,519.37 × 899.22
  4. Step 4: Simplify right side
    1,678.53x = 2,265,467.89
  5. Step 5: Solve for x
    x = 2,265,467.89/1,678.53
  6. Step 6: Final answer
    x = 1,349.67

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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.