Home / 5,280.78-7,921.26-4,960.02

Finding the Fourth Proportional to 5,280.78, 7,921.26 and 4,960.02

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Solution

The fourth proportional to 5,280.78, 7,921.26 and 4,960.02 is: 7,440.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.78 : 7,921.26 = 4,960.02 : x
  2. Step 2: Convert to fraction form
    5,280.78/7,921.26 = 4,960.02/x
  3. Step 3: Cross multiply
    5,280.78x = 7,921.26 × 4,960.02
  4. Step 4: Simplify right side
    5,280.78x = 39,289,608.03
  5. Step 5: Solve for x
    x = 39,289,608.03/5,280.78
  6. Step 6: Final answer
    x = 7,440.11

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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.