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Finding the Fourth Proportional to 3,043.19, 4,564.94 and 851.90

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Solution

The fourth proportional to 3,043.19, 4,564.94 and 851.90 is: 1,277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,043.19 : 4,564.94 = 851.90 : x
  2. Step 2: Convert to fraction form
    3,043.19/4,564.94 = 851.90/x
  3. Step 3: Cross multiply
    3,043.19x = 4,564.94 × 851.90
  4. Step 4: Simplify right side
    3,043.19x = 3,888,875.77
  5. Step 5: Solve for x
    x = 3,888,875.77/3,043.19
  6. Step 6: Final answer
    x = 1,277.90

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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.