Home / 6,928.60-10,390.20-2,543.80

Finding the Fourth Proportional to 6,928.60, 10,390.20 and 2,543.80

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Solution

The fourth proportional to 6,928.60, 10,390.20 and 2,543.80 is: 3,814.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928.60 : 10,390.20 = 2,543.80 : x
  2. Step 2: Convert to fraction form
    6,928.60/10,390.20 = 2,543.80/x
  3. Step 3: Cross multiply
    6,928.60x = 10,390.20 × 2,543.80
  4. Step 4: Simplify right side
    6,928.60x = 26,430,590.76
  5. Step 5: Solve for x
    x = 26,430,590.76/6,928.60
  6. Step 6: Final answer
    x = 3,814.71

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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.