Home / 2,818.85-3,888.21-2,260.66

Finding the Fourth Proportional to 2,818.85, 3,888.21 and 2,260.66

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Solution

The fourth proportional to 2,818.85, 3,888.21 and 2,260.66 is: 3,118.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.85 : 3,888.21 = 2,260.66 : x
  2. Step 2: Convert to fraction form
    2,818.85/3,888.21 = 2,260.66/x
  3. Step 3: Cross multiply
    2,818.85x = 3,888.21 × 2,260.66
  4. Step 4: Simplify right side
    2,818.85x = 8,789,901.38
  5. Step 5: Solve for x
    x = 8,789,901.38/2,818.85
  6. Step 6: Final answer
    x = 3,118.26

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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.