Home / 4,279.78-6,388.70-3,698.51

Finding the Fourth Proportional to 4,279.78, 6,388.70 and 3,698.51

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Solution

The fourth proportional to 4,279.78, 6,388.70 and 3,698.51 is: 5,521.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.78 : 6,388.70 = 3,698.51 : x
  2. Step 2: Convert to fraction form
    4,279.78/6,388.70 = 3,698.51/x
  3. Step 3: Cross multiply
    4,279.78x = 6,388.70 × 3,698.51
  4. Step 4: Simplify right side
    4,279.78x = 23,628,670.84
  5. Step 5: Solve for x
    x = 23,628,670.84/4,279.78
  6. Step 6: Final answer
    x = 5,521.00

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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.