Home / 1,676.20-2,312.01-1,011.91

Finding the Fourth Proportional to 1,676.20, 2,312.01 and 1,011.91

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Solution

The fourth proportional to 1,676.20, 2,312.01 and 1,011.91 is: 1,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.20 : 2,312.01 = 1,011.91 : x
  2. Step 2: Convert to fraction form
    1,676.20/2,312.01 = 1,011.91/x
  3. Step 3: Cross multiply
    1,676.20x = 2,312.01 × 1,011.91
  4. Step 4: Simplify right side
    1,676.20x = 2,339,546.04
  5. Step 5: Solve for x
    x = 2,339,546.04/1,676.20
  6. Step 6: Final answer
    x = 1,395.74

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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.