Home / 3,122.28-4,683.29-1,272.87

Finding the Fourth Proportional to 3,122.28, 4,683.29 and 1,272.87

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Solution

The fourth proportional to 3,122.28, 4,683.29 and 1,272.87 is: 1,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.28 : 4,683.29 = 1,272.87 : x
  2. Step 2: Convert to fraction form
    3,122.28/4,683.29 = 1,272.87/x
  3. Step 3: Cross multiply
    3,122.28x = 4,683.29 × 1,272.87
  4. Step 4: Simplify right side
    3,122.28x = 5,961,212.98
  5. Step 5: Solve for x
    x = 5,961,212.98/3,122.28
  6. Step 6: Final answer
    x = 1,909.25

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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.