Home / 2,987.44-4,124.62-2,801.56

Finding the Fourth Proportional to 2,987.44, 4,124.62 and 2,801.56

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Solution

The fourth proportional to 2,987.44, 4,124.62 and 2,801.56 is: 3,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.44 : 4,124.62 = 2,801.56 : x
  2. Step 2: Convert to fraction form
    2,987.44/4,124.62 = 2,801.56/x
  3. Step 3: Cross multiply
    2,987.44x = 4,124.62 × 2,801.56
  4. Step 4: Simplify right side
    2,987.44x = 11,555,370.41
  5. Step 5: Solve for x
    x = 11,555,370.41/2,987.44
  6. Step 6: Final answer
    x = 3,867.98

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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.