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Finding the Fourth Proportional to 3,051.80, 4,577.88 and 860.72

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Solution

The fourth proportional to 3,051.80, 4,577.88 and 860.72 is: 1,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.80 : 4,577.88 = 860.72 : x
  2. Step 2: Convert to fraction form
    3,051.80/4,577.88 = 860.72/x
  3. Step 3: Cross multiply
    3,051.80x = 4,577.88 × 860.72
  4. Step 4: Simplify right side
    3,051.80x = 3,940,249.98
  5. Step 5: Solve for x
    x = 3,940,249.98/3,051.80
  6. Step 6: Final answer
    x = 1,291.13

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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.