Home / 2,792.18-4,187.28-817.25

Finding the Fourth Proportional to 2,792.18, 4,187.28 and 817.25

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Solution

The fourth proportional to 2,792.18, 4,187.28 and 817.25 is: 1,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.18 : 4,187.28 = 817.25 : x
  2. Step 2: Convert to fraction form
    2,792.18/4,187.28 = 817.25/x
  3. Step 3: Cross multiply
    2,792.18x = 4,187.28 × 817.25
  4. Step 4: Simplify right side
    2,792.18x = 3,422,054.58
  5. Step 5: Solve for x
    x = 3,422,054.58/2,792.18
  6. Step 6: Final answer
    x = 1,225.59

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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.