Home / 4,905.71-7,356.79-2,686.20

Finding the Fourth Proportional to 4,905.71, 7,356.79 and 2,686.20

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Solution

The fourth proportional to 4,905.71, 7,356.79 and 2,686.20 is: 4,028.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.71 : 7,356.79 = 2,686.20 : x
  2. Step 2: Convert to fraction form
    4,905.71/7,356.79 = 2,686.20/x
  3. Step 3: Cross multiply
    4,905.71x = 7,356.79 × 2,686.20
  4. Step 4: Simplify right side
    4,905.71x = 19,761,785.07
  5. Step 5: Solve for x
    x = 19,761,785.07/4,905.71
  6. Step 6: Final answer
    x = 4,028.32

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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.