Home / 1,124.21-1,688.45-882.43

Finding the Fourth Proportional to 1,124.21, 1,688.45 and 882.43

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Solution

The fourth proportional to 1,124.21, 1,688.45 and 882.43 is: 1,325.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.21 : 1,688.45 = 882.43 : x
  2. Step 2: Convert to fraction form
    1,124.21/1,688.45 = 882.43/x
  3. Step 3: Cross multiply
    1,124.21x = 1,688.45 × 882.43
  4. Step 4: Simplify right side
    1,124.21x = 1,489,930.30
  5. Step 5: Solve for x
    x = 1,489,930.30/1,124.21
  6. Step 6: Final answer
    x = 1,325.31

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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.