Home / 11,272.80-16,905.06-3,875.16

Finding the Fourth Proportional to 11,272.80, 16,905.06 and 3,875.16

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Solution

The fourth proportional to 11,272.80, 16,905.06 and 3,875.16 is: 5,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,272.80 : 16,905.06 = 3,875.16 : x
  2. Step 2: Convert to fraction form
    11,272.80/16,905.06 = 3,875.16/x
  3. Step 3: Cross multiply
    11,272.80x = 16,905.06 × 3,875.16
  4. Step 4: Simplify right side
    11,272.80x = 65,509,812.31
  5. Step 5: Solve for x
    x = 65,509,812.31/11,272.80
  6. Step 6: Final answer
    x = 5,811.32

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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.