Home / 1,938.50-2,676.51-1,193.45

Finding the Fourth Proportional to 1,938.50, 2,676.51 and 1,193.45

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Solution

The fourth proportional to 1,938.50, 2,676.51 and 1,193.45 is: 1,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.50 : 2,676.51 = 1,193.45 : x
  2. Step 2: Convert to fraction form
    1,938.50/2,676.51 = 1,193.45/x
  3. Step 3: Cross multiply
    1,938.50x = 2,676.51 × 1,193.45
  4. Step 4: Simplify right side
    1,938.50x = 3,194,280.86
  5. Step 5: Solve for x
    x = 3,194,280.86/1,938.50
  6. Step 6: Final answer
    x = 1,647.81

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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.