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Finding the Fourth Proportional to 1,429.67, 2,143.06 and 902.97

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Solution

The fourth proportional to 1,429.67, 2,143.06 and 902.97 is: 1,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.67 : 2,143.06 = 902.97 : x
  2. Step 2: Convert to fraction form
    1,429.67/2,143.06 = 902.97/x
  3. Step 3: Cross multiply
    1,429.67x = 2,143.06 × 902.97
  4. Step 4: Simplify right side
    1,429.67x = 1,935,120.02
  5. Step 5: Solve for x
    x = 1,935,120.02/1,429.67
  6. Step 6: Final answer
    x = 1,353.54

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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.