Home / 7,820.48-11,724.24-2,889.20

Finding the Fourth Proportional to 7,820.48, 11,724.24 and 2,889.20

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Solution

The fourth proportional to 7,820.48, 11,724.24 and 2,889.20 is: 4,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.48 : 11,724.24 = 2,889.20 : x
  2. Step 2: Convert to fraction form
    7,820.48/11,724.24 = 2,889.20/x
  3. Step 3: Cross multiply
    7,820.48x = 11,724.24 × 2,889.20
  4. Step 4: Simplify right side
    7,820.48x = 33,873,674.21
  5. Step 5: Solve for x
    x = 33,873,674.21/7,820.48
  6. Step 6: Final answer
    x = 4,331.41

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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.