Home / 6,780.81-10,172.76-2,620.86

Finding the Fourth Proportional to 6,780.81, 10,172.76 and 2,620.86

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Solution

The fourth proportional to 6,780.81, 10,172.76 and 2,620.86 is: 3,931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.81 : 10,172.76 = 2,620.86 : x
  2. Step 2: Convert to fraction form
    6,780.81/10,172.76 = 2,620.86/x
  3. Step 3: Cross multiply
    6,780.81x = 10,172.76 × 2,620.86
  4. Step 4: Simplify right side
    6,780.81x = 26,661,379.77
  5. Step 5: Solve for x
    x = 26,661,379.77/6,780.81
  6. Step 6: Final answer
    x = 3,931.89

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1.5x scale

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.