Home / 2,606.20-3,911.10-1,876.40

Finding the Fourth Proportional to 2,606.20, 3,911.10 and 1,876.40

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Solution

The fourth proportional to 2,606.20, 3,911.10 and 1,876.40 is: 2,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.20 : 3,911.10 = 1,876.40 : x
  2. Step 2: Convert to fraction form
    2,606.20/3,911.10 = 1,876.40/x
  3. Step 3: Cross multiply
    2,606.20x = 3,911.10 × 1,876.40
  4. Step 4: Simplify right side
    2,606.20x = 7,338,788.04
  5. Step 5: Solve for x
    x = 7,338,788.04/2,606.20
  6. Step 6: Final answer
    x = 2,815.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.