Home / 2,818.79-3,889.47-1,770.11

Finding the Fourth Proportional to 2,818.79, 3,889.47 and 1,770.11

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Solution

The fourth proportional to 2,818.79, 3,889.47 and 1,770.11 is: 2,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.79 : 3,889.47 = 1,770.11 : x
  2. Step 2: Convert to fraction form
    2,818.79/3,889.47 = 1,770.11/x
  3. Step 3: Cross multiply
    2,818.79x = 3,889.47 × 1,770.11
  4. Step 4: Simplify right side
    2,818.79x = 6,884,761.44
  5. Step 5: Solve for x
    x = 6,884,761.44/2,818.79
  6. Step 6: Final answer
    x = 2,442.46

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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.