Home / 1,518.15-2,277.23-868.43

Finding the Fourth Proportional to 1,518.15, 2,277.23 and 868.43

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Solution

The fourth proportional to 1,518.15, 2,277.23 and 868.43 is: 1,302.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.15 : 2,277.23 = 868.43 : x
  2. Step 2: Convert to fraction form
    1,518.15/2,277.23 = 868.43/x
  3. Step 3: Cross multiply
    1,518.15x = 2,277.23 × 868.43
  4. Step 4: Simplify right side
    1,518.15x = 1,977,599.12
  5. Step 5: Solve for x
    x = 1,977,599.12/1,518.15
  6. Step 6: Final answer
    x = 1,302.64

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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.