Home / 6,527.60-9,791.40-2,145.20

Finding the Fourth Proportional to 6,527.60, 9,791.40 and 2,145.20

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Solution

The fourth proportional to 6,527.60, 9,791.40 and 2,145.20 is: 3,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,527.60 : 9,791.40 = 2,145.20 : x
  2. Step 2: Convert to fraction form
    6,527.60/9,791.40 = 2,145.20/x
  3. Step 3: Cross multiply
    6,527.60x = 9,791.40 × 2,145.20
  4. Step 4: Simplify right side
    6,527.60x = 21,004,511.28
  5. Step 5: Solve for x
    x = 21,004,511.28/6,527.60
  6. Step 6: Final answer
    x = 3,217.80

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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.