Home / 5,285.25-7,930.61-2,688.19

Finding the Fourth Proportional to 5,285.25, 7,930.61 and 2,688.19

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Solution

The fourth proportional to 5,285.25, 7,930.61 and 2,688.19 is: 4,033.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.25 : 7,930.61 = 2,688.19 : x
  2. Step 2: Convert to fraction form
    5,285.25/7,930.61 = 2,688.19/x
  3. Step 3: Cross multiply
    5,285.25x = 7,930.61 × 2,688.19
  4. Step 4: Simplify right side
    5,285.25x = 21,318,963.31
  5. Step 5: Solve for x
    x = 21,318,963.31/5,285.25
  6. Step 6: Final answer
    x = 4,033.67

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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.