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Finding the Fourth Proportional to 1,800.58, 2,485.74 and 1,277.86

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Solution

The fourth proportional to 1,800.58, 2,485.74 and 1,277.86 is: 1,764.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.58 : 2,485.74 = 1,277.86 : x
  2. Step 2: Convert to fraction form
    1,800.58/2,485.74 = 1,277.86/x
  3. Step 3: Cross multiply
    1,800.58x = 2,485.74 × 1,277.86
  4. Step 4: Simplify right side
    1,800.58x = 3,176,427.72
  5. Step 5: Solve for x
    x = 3,176,427.72/1,800.58
  6. Step 6: Final answer
    x = 1,764.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.