Home / 1,938.58-2,676.27-1,556.31

Finding the Fourth Proportional to 1,938.58, 2,676.27 and 1,556.31

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Solution

The fourth proportional to 1,938.58, 2,676.27 and 1,556.31 is: 2,148.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.58 : 2,676.27 = 1,556.31 : x
  2. Step 2: Convert to fraction form
    1,938.58/2,676.27 = 1,556.31/x
  3. Step 3: Cross multiply
    1,938.58x = 2,676.27 × 1,556.31
  4. Step 4: Simplify right side
    1,938.58x = 4,165,108.50
  5. Step 5: Solve for x
    x = 4,165,108.50/1,938.58
  6. Step 6: Final answer
    x = 2,148.53

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1.5x scale

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.