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Finding the Fourth Proportional to 3,051.88, 4,577.86 and 860.66

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Solution

The fourth proportional to 3,051.88, 4,577.86 and 860.66 is: 1,291.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.88 : 4,577.86 = 860.66 : x
  2. Step 2: Convert to fraction form
    3,051.88/4,577.86 = 860.66/x
  3. Step 3: Cross multiply
    3,051.88x = 4,577.86 × 860.66
  4. Step 4: Simplify right side
    3,051.88x = 3,939,980.99
  5. Step 5: Solve for x
    x = 3,939,980.99/3,051.88
  6. Step 6: Final answer
    x = 1,291.00

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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.