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Finding the Fourth Proportional to 2,429.70, 3,644.91 and 948.63

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Solution

The fourth proportional to 2,429.70, 3,644.91 and 948.63 is: 1,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,429.70 : 3,644.91 = 948.63 : x
  2. Step 2: Convert to fraction form
    2,429.70/3,644.91 = 948.63/x
  3. Step 3: Cross multiply
    2,429.70x = 3,644.91 × 948.63
  4. Step 4: Simplify right side
    2,429.70x = 3,457,670.97
  5. Step 5: Solve for x
    x = 3,457,670.97/2,429.70
  6. Step 6: Final answer
    x = 1,423.09

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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.