Home / 1,939.55-2,676.39-1,153.46

Finding the Fourth Proportional to 1,939.55, 2,676.39 and 1,153.46

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Solution

The fourth proportional to 1,939.55, 2,676.39 and 1,153.46 is: 1,591.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.55 : 2,676.39 = 1,153.46 : x
  2. Step 2: Convert to fraction form
    1,939.55/2,676.39 = 1,153.46/x
  3. Step 3: Cross multiply
    1,939.55x = 2,676.39 × 1,153.46
  4. Step 4: Simplify right side
    1,939.55x = 3,087,108.81
  5. Step 5: Solve for x
    x = 3,087,108.81/1,939.55
  6. Step 6: Final answer
    x = 1,591.66

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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.