Home / 4,342.28-6,511.92-1,420.04

Finding the Fourth Proportional to 4,342.28, 6,511.92 and 1,420.04

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Solution

The fourth proportional to 4,342.28, 6,511.92 and 1,420.04 is: 2,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,342.28 : 6,511.92 = 1,420.04 : x
  2. Step 2: Convert to fraction form
    4,342.28/6,511.92 = 1,420.04/x
  3. Step 3: Cross multiply
    4,342.28x = 6,511.92 × 1,420.04
  4. Step 4: Simplify right side
    4,342.28x = 9,247,186.88
  5. Step 5: Solve for x
    x = 9,247,186.88/4,342.28
  6. Step 6: Final answer
    x = 2,129.57

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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.