Home / 2,890.37-3,987.17-1,944.55

Finding the Fourth Proportional to 2,890.37, 3,987.17 and 1,944.55

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Solution

The fourth proportional to 2,890.37, 3,987.17 and 1,944.55 is: 2,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.37 : 3,987.17 = 1,944.55 : x
  2. Step 2: Convert to fraction form
    2,890.37/3,987.17 = 1,944.55/x
  3. Step 3: Cross multiply
    2,890.37x = 3,987.17 × 1,944.55
  4. Step 4: Simplify right side
    2,890.37x = 7,753,262.11
  5. Step 5: Solve for x
    x = 7,753,262.11/2,890.37
  6. Step 6: Final answer
    x = 2,682.45

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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.