Home / 1,676.38-2,313.39-1,086.90

Finding the Fourth Proportional to 1,676.38, 2,313.39 and 1,086.90

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Solution

The fourth proportional to 1,676.38, 2,313.39 and 1,086.90 is: 1,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.38 : 2,313.39 = 1,086.90 : x
  2. Step 2: Convert to fraction form
    1,676.38/2,313.39 = 1,086.90/x
  3. Step 3: Cross multiply
    1,676.38x = 2,313.39 × 1,086.90
  4. Step 4: Simplify right side
    1,676.38x = 2,514,423.59
  5. Step 5: Solve for x
    x = 2,514,423.59/1,676.38
  6. Step 6: Final answer
    x = 1,499.91

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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.