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Finding the Fourth Proportional to 3,179.79, 4,763.18 and 1,488.77

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Solution

The fourth proportional to 3,179.79, 4,763.18 and 1,488.77 is: 2,230.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.79 : 4,763.18 = 1,488.77 : x
  2. Step 2: Convert to fraction form
    3,179.79/4,763.18 = 1,488.77/x
  3. Step 3: Cross multiply
    3,179.79x = 4,763.18 × 1,488.77
  4. Step 4: Simplify right side
    3,179.79x = 7,091,248.23
  5. Step 5: Solve for x
    x = 7,091,248.23/3,179.79
  6. Step 6: Final answer
    x = 2,230.10

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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.