Home / 5,122.72-7,069.36-2,998.32

Finding the Fourth Proportional to 5,122.72, 7,069.36 and 2,998.32

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Solution

The fourth proportional to 5,122.72, 7,069.36 and 2,998.32 is: 4,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.72 : 7,069.36 = 2,998.32 : x
  2. Step 2: Convert to fraction form
    5,122.72/7,069.36 = 2,998.32/x
  3. Step 3: Cross multiply
    5,122.72x = 7,069.36 × 2,998.32
  4. Step 4: Simplify right side
    5,122.72x = 21,196,203.48
  5. Step 5: Solve for x
    x = 21,196,203.48/5,122.72
  6. Step 6: Final answer
    x = 4,137.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.