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Finding the Fourth Proportional to 2,950.85, 4,425.84 and 870.43

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Solution

The fourth proportional to 2,950.85, 4,425.84 and 870.43 is: 1,305.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,950.85 : 4,425.84 = 870.43 : x
  2. Step 2: Convert to fraction form
    2,950.85/4,425.84 = 870.43/x
  3. Step 3: Cross multiply
    2,950.85x = 4,425.84 × 870.43
  4. Step 4: Simplify right side
    2,950.85x = 3,852,372.85
  5. Step 5: Solve for x
    x = 3,852,372.85/2,950.85
  6. Step 6: Final answer
    x = 1,305.52

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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.