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Finding the Fourth Proportional to 1,617.76, 2,232.12 and 1,028.08

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Solution

The fourth proportional to 1,617.76, 2,232.12 and 1,028.08 is: 1,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.76 : 2,232.12 = 1,028.08 : x
  2. Step 2: Convert to fraction form
    1,617.76/2,232.12 = 1,028.08/x
  3. Step 3: Cross multiply
    1,617.76x = 2,232.12 × 1,028.08
  4. Step 4: Simplify right side
    1,617.76x = 2,294,797.93
  5. Step 5: Solve for x
    x = 2,294,797.93/1,617.76
  6. Step 6: Final answer
    x = 1,418.50

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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.