Home / 2,676.18-3,694.78-2,118.90

Finding the Fourth Proportional to 2,676.18, 3,694.78 and 2,118.90

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Solution

The fourth proportional to 2,676.18, 3,694.78 and 2,118.90 is: 2,925.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,676.18 : 3,694.78 = 2,118.90 : x
  2. Step 2: Convert to fraction form
    2,676.18/3,694.78 = 2,118.90/x
  3. Step 3: Cross multiply
    2,676.18x = 3,694.78 × 2,118.90
  4. Step 4: Simplify right side
    2,676.18x = 7,828,869.34
  5. Step 5: Solve for x
    x = 7,828,869.34/2,676.18
  6. Step 6: Final answer
    x = 2,925.39

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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.