Home / 2,761.25-3,809.50-1,642.23

Finding the Fourth Proportional to 2,761.25, 3,809.50 and 1,642.23

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Solution

The fourth proportional to 2,761.25, 3,809.50 and 1,642.23 is: 2,265.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.25 : 3,809.50 = 1,642.23 : x
  2. Step 2: Convert to fraction form
    2,761.25/3,809.50 = 1,642.23/x
  3. Step 3: Cross multiply
    2,761.25x = 3,809.50 × 1,642.23
  4. Step 4: Simplify right side
    2,761.25x = 6,256,071.08
  5. Step 5: Solve for x
    x = 6,256,071.08/2,761.25
  6. Step 6: Final answer
    x = 2,265.67

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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.