Home / 3,077.21-4,615.77-1,619.21

Finding the Fourth Proportional to 3,077.21, 4,615.77 and 1,619.21

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Solution

The fourth proportional to 3,077.21, 4,615.77 and 1,619.21 is: 2,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.21 : 4,615.77 = 1,619.21 : x
  2. Step 2: Convert to fraction form
    3,077.21/4,615.77 = 1,619.21/x
  3. Step 3: Cross multiply
    3,077.21x = 4,615.77 × 1,619.21
  4. Step 4: Simplify right side
    3,077.21x = 7,473,877.86
  5. Step 5: Solve for x
    x = 7,473,877.86/3,077.21
  6. Step 6: Final answer
    x = 2,428.79

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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.