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Finding the Fourth Proportional to 3,188.89, 4,779.27 and 1,803

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Solution

The fourth proportional to 3,188.89, 4,779.27 and 1,803 is: 2,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.89 : 4,779.27 = 1,803 : x
  2. Step 2: Convert to fraction form
    3,188.89/4,779.27 = 1,803/x
  3. Step 3: Cross multiply
    3,188.89x = 4,779.27 × 1,803
  4. Step 4: Simplify right side
    3,188.89x = 8,617,023.81
  5. Step 5: Solve for x
    x = 8,617,023.81/3,188.89
  6. Step 6: Final answer
    x = 2,702.20

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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.