Home / 5,285.14-7,930.41-2,688.07

Finding the Fourth Proportional to 5,285.14, 7,930.41 and 2,688.07

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Solution

The fourth proportional to 5,285.14, 7,930.41 and 2,688.07 is: 4,033.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.14 : 7,930.41 = 2,688.07 : x
  2. Step 2: Convert to fraction form
    5,285.14/7,930.41 = 2,688.07/x
  3. Step 3: Cross multiply
    5,285.14x = 7,930.41 × 2,688.07
  4. Step 4: Simplify right side
    5,285.14x = 21,317,497.21
  5. Step 5: Solve for x
    x = 21,317,497.21/5,285.14
  6. Step 6: Final answer
    x = 4,033.48

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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.