Home / 2,818.89-3,889.71-1,770.75

Finding the Fourth Proportional to 2,818.89, 3,889.71 and 1,770.75

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Solution

The fourth proportional to 2,818.89, 3,889.71 and 1,770.75 is: 2,443.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.89 : 3,889.71 = 1,770.75 : x
  2. Step 2: Convert to fraction form
    2,818.89/3,889.71 = 1,770.75/x
  3. Step 3: Cross multiply
    2,818.89x = 3,889.71 × 1,770.75
  4. Step 4: Simplify right side
    2,818.89x = 6,887,703.98
  5. Step 5: Solve for x
    x = 6,887,703.98/2,818.89
  6. Step 6: Final answer
    x = 2,443.41

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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.