Home / 7,120.72-10,686.30-2,682.55

Finding the Fourth Proportional to 7,120.72, 10,686.30 and 2,682.55

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Solution

The fourth proportional to 7,120.72, 10,686.30 and 2,682.55 is: 4,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.72 : 10,686.30 = 2,682.55 : x
  2. Step 2: Convert to fraction form
    7,120.72/10,686.30 = 2,682.55/x
  3. Step 3: Cross multiply
    7,120.72x = 10,686.30 × 2,682.55
  4. Step 4: Simplify right side
    7,120.72x = 28,666,534.07
  5. Step 5: Solve for x
    x = 28,666,534.07/7,120.72
  6. Step 6: Final answer
    x = 4,025.79

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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.