Home / 4,720.08-7,077.36-2,120.48

Finding the Fourth Proportional to 4,720.08, 7,077.36 and 2,120.48

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Solution

The fourth proportional to 4,720.08, 7,077.36 and 2,120.48 is: 3,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.08 : 7,077.36 = 2,120.48 : x
  2. Step 2: Convert to fraction form
    4,720.08/7,077.36 = 2,120.48/x
  3. Step 3: Cross multiply
    4,720.08x = 7,077.36 × 2,120.48
  4. Step 4: Simplify right side
    4,720.08x = 15,007,400.33
  5. Step 5: Solve for x
    x = 15,007,400.33/4,720.08
  6. Step 6: Final answer
    x = 3,179.48

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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.