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Finding the Fourth Proportional to 1,556.48, 2,147.99 and 893.43

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Solution

The fourth proportional to 1,556.48, 2,147.99 and 893.43 is: 1,232.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.48 : 2,147.99 = 893.43 : x
  2. Step 2: Convert to fraction form
    1,556.48/2,147.99 = 893.43/x
  3. Step 3: Cross multiply
    1,556.48x = 2,147.99 × 893.43
  4. Step 4: Simplify right side
    1,556.48x = 1,919,074.24
  5. Step 5: Solve for x
    x = 1,919,074.24/1,556.48
  6. Step 6: Final answer
    x = 1,232.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.