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Finding the Fourth Proportional to 1,556.58, 2,147.85 and 893.46

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Solution

The fourth proportional to 1,556.58, 2,147.85 and 893.46 is: 1,232.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.58 : 2,147.85 = 893.46 : x
  2. Step 2: Convert to fraction form
    1,556.58/2,147.85 = 893.46/x
  3. Step 3: Cross multiply
    1,556.58x = 2,147.85 × 893.46
  4. Step 4: Simplify right side
    1,556.58x = 1,919,018.06
  5. Step 5: Solve for x
    x = 1,919,018.06/1,556.58
  6. Step 6: Final answer
    x = 1,232.84

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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.