Home / 7,085.32-10,628.58-2,155

Finding the Fourth Proportional to 7,085.32, 10,628.58 and 2,155

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Solution

The fourth proportional to 7,085.32, 10,628.58 and 2,155 is: 3,232.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.32 : 10,628.58 = 2,155 : x
  2. Step 2: Convert to fraction form
    7,085.32/10,628.58 = 2,155/x
  3. Step 3: Cross multiply
    7,085.32x = 10,628.58 × 2,155
  4. Step 4: Simplify right side
    7,085.32x = 22,904,589.90
  5. Step 5: Solve for x
    x = 22,904,589.90/7,085.32
  6. Step 6: Final answer
    x = 3,232.68

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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.