Home / 6,515.64-9,771.84-2,135.70

Finding the Fourth Proportional to 6,515.64, 9,771.84 and 2,135.70

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Solution

The fourth proportional to 6,515.64, 9,771.84 and 2,135.70 is: 3,203.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.64 : 9,771.84 = 2,135.70 : x
  2. Step 2: Convert to fraction form
    6,515.64/9,771.84 = 2,135.70/x
  3. Step 3: Cross multiply
    6,515.64x = 9,771.84 × 2,135.70
  4. Step 4: Simplify right side
    6,515.64x = 20,869,718.69
  5. Step 5: Solve for x
    x = 20,869,718.69/6,515.64
  6. Step 6: Final answer
    x = 3,203.02

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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.