Home / 7,420.48-11,076.56-6,872.32

Finding the Fourth Proportional to 7,420.48, 11,076.56 and 6,872.32

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Solution

The fourth proportional to 7,420.48, 11,076.56 and 6,872.32 is: 10,258.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.48 : 11,076.56 = 6,872.32 : x
  2. Step 2: Convert to fraction form
    7,420.48/11,076.56 = 6,872.32/x
  3. Step 3: Cross multiply
    7,420.48x = 11,076.56 × 6,872.32
  4. Step 4: Simplify right side
    7,420.48x = 76,121,664.82
  5. Step 5: Solve for x
    x = 76,121,664.82/7,420.48
  6. Step 6: Final answer
    x = 10,258.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.