Home / 5,412.41-8,122.86-2,779.81

Finding the Fourth Proportional to 5,412.41, 8,122.86 and 2,779.81

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Solution

The fourth proportional to 5,412.41, 8,122.86 and 2,779.81 is: 4,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.41 : 8,122.86 = 2,779.81 : x
  2. Step 2: Convert to fraction form
    5,412.41/8,122.86 = 2,779.81/x
  3. Step 3: Cross multiply
    5,412.41x = 8,122.86 × 2,779.81
  4. Step 4: Simplify right side
    5,412.41x = 22,580,007.46
  5. Step 5: Solve for x
    x = 22,580,007.46/5,412.41
  6. Step 6: Final answer
    x = 4,171.90

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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.