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Finding the Fourth Proportional to 3,070.62, 4,605.35 and 879.36

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Solution

The fourth proportional to 3,070.62, 4,605.35 and 879.36 is: 1,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.62 : 4,605.35 = 879.36 : x
  2. Step 2: Convert to fraction form
    3,070.62/4,605.35 = 879.36/x
  3. Step 3: Cross multiply
    3,070.62x = 4,605.35 × 879.36
  4. Step 4: Simplify right side
    3,070.62x = 4,049,756.18
  5. Step 5: Solve for x
    x = 4,049,756.18/3,070.62
  6. Step 6: Final answer
    x = 1,318.87

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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.