Home / 6,515.13-9,770.67-2,131.68

Finding the Fourth Proportional to 6,515.13, 9,770.67 and 2,131.68

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Solution

The fourth proportional to 6,515.13, 9,770.67 and 2,131.68 is: 3,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.13 : 9,770.67 = 2,131.68 : x
  2. Step 2: Convert to fraction form
    6,515.13/9,770.67 = 2,131.68/x
  3. Step 3: Cross multiply
    6,515.13x = 9,770.67 × 2,131.68
  4. Step 4: Simplify right side
    6,515.13x = 20,827,941.83
  5. Step 5: Solve for x
    x = 20,827,941.83/6,515.13
  6. Step 6: Final answer
    x = 3,196.86

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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.