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Finding the Fourth Proportional to 2,779.66, 4,169.47 and 1,114.53

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Solution

The fourth proportional to 2,779.66, 4,169.47 and 1,114.53 is: 1,671.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.66 : 4,169.47 = 1,114.53 : x
  2. Step 2: Convert to fraction form
    2,779.66/4,169.47 = 1,114.53/x
  3. Step 3: Cross multiply
    2,779.66x = 4,169.47 × 1,114.53
  4. Step 4: Simplify right side
    2,779.66x = 4,646,999.40
  5. Step 5: Solve for x
    x = 4,646,999.40/2,779.66
  6. Step 6: Final answer
    x = 1,671.79

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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.