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Finding the Fourth Proportional to 3,428.73, 5,143.28 and 1,088.91

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Solution

The fourth proportional to 3,428.73, 5,143.28 and 1,088.91 is: 1,633.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.73 : 5,143.28 = 1,088.91 : x
  2. Step 2: Convert to fraction form
    3,428.73/5,143.28 = 1,088.91/x
  3. Step 3: Cross multiply
    3,428.73x = 5,143.28 × 1,088.91
  4. Step 4: Simplify right side
    3,428.73x = 5,600,569.02
  5. Step 5: Solve for x
    x = 5,600,569.02/3,428.73
  6. Step 6: Final answer
    x = 1,633.42

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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.