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Finding the Fourth Proportional to 2,987.21, 4,480.80 and 795.94

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Solution

The fourth proportional to 2,987.21, 4,480.80 and 795.94 is: 1,193.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.21 : 4,480.80 = 795.94 : x
  2. Step 2: Convert to fraction form
    2,987.21/4,480.80 = 795.94/x
  3. Step 3: Cross multiply
    2,987.21x = 4,480.80 × 795.94
  4. Step 4: Simplify right side
    2,987.21x = 3,566,447.95
  5. Step 5: Solve for x
    x = 3,566,447.95/2,987.21
  6. Step 6: Final answer
    x = 1,193.91

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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.