Home / 2,770.78-3,818.40-1,983.46

Finding the Fourth Proportional to 2,770.78, 3,818.40 and 1,983.46

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Solution

The fourth proportional to 2,770.78, 3,818.40 and 1,983.46 is: 2,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.78 : 3,818.40 = 1,983.46 : x
  2. Step 2: Convert to fraction form
    2,770.78/3,818.40 = 1,983.46/x
  3. Step 3: Cross multiply
    2,770.78x = 3,818.40 × 1,983.46
  4. Step 4: Simplify right side
    2,770.78x = 7,573,643.66
  5. Step 5: Solve for x
    x = 7,573,643.66/2,770.78
  6. Step 6: Final answer
    x = 2,733.40

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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.