Home / 8,253.21-12,377.31-2,987.58

Finding the Fourth Proportional to 8,253.21, 12,377.31 and 2,987.58

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Solution

The fourth proportional to 8,253.21, 12,377.31 and 2,987.58 is: 4,480.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,253.21 : 12,377.31 = 2,987.58 : x
  2. Step 2: Convert to fraction form
    8,253.21/12,377.31 = 2,987.58/x
  3. Step 3: Cross multiply
    8,253.21x = 12,377.31 × 2,987.58
  4. Step 4: Simplify right side
    8,253.21x = 36,978,141.92
  5. Step 5: Solve for x
    x = 36,978,141.92/8,253.21
  6. Step 6: Final answer
    x = 4,480.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.