Home / 2,820.32-3,890.38-1,770.56

Finding the Fourth Proportional to 2,820.32, 3,890.38 and 1,770.56

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Solution

The fourth proportional to 2,820.32, 3,890.38 and 1,770.56 is: 2,442.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.32 : 3,890.38 = 1,770.56 : x
  2. Step 2: Convert to fraction form
    2,820.32/3,890.38 = 1,770.56/x
  3. Step 3: Cross multiply
    2,820.32x = 3,890.38 × 1,770.56
  4. Step 4: Simplify right side
    2,820.32x = 6,888,151.21
  5. Step 5: Solve for x
    x = 6,888,151.21/2,820.32
  6. Step 6: Final answer
    x = 2,442.33

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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.