Home / 3,128.74-4,315.25-2,184.22

Finding the Fourth Proportional to 3,128.74, 4,315.25 and 2,184.22

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Solution

The fourth proportional to 3,128.74, 4,315.25 and 2,184.22 is: 3,012.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.74 : 4,315.25 = 2,184.22 : x
  2. Step 2: Convert to fraction form
    3,128.74/4,315.25 = 2,184.22/x
  3. Step 3: Cross multiply
    3,128.74x = 4,315.25 × 2,184.22
  4. Step 4: Simplify right side
    3,128.74x = 9,425,455.36
  5. Step 5: Solve for x
    x = 9,425,455.36/3,128.74
  6. Step 6: Final answer
    x = 3,012.54

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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.