Home / 1,772.22-2,645.36-1,643.72

Finding the Fourth Proportional to 1,772.22, 2,645.36 and 1,643.72

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Solution

The fourth proportional to 1,772.22, 2,645.36 and 1,643.72 is: 2,453.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.22 : 2,645.36 = 1,643.72 : x
  2. Step 2: Convert to fraction form
    1,772.22/2,645.36 = 1,643.72/x
  3. Step 3: Cross multiply
    1,772.22x = 2,645.36 × 1,643.72
  4. Step 4: Simplify right side
    1,772.22x = 4,348,222.92
  5. Step 5: Solve for x
    x = 4,348,222.92/1,772.22
  6. Step 6: Final answer
    x = 2,453.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.