Home / 8,268.81-12,398.53-2,720.66

Finding the Fourth Proportional to 8,268.81, 12,398.53 and 2,720.66

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Solution

The fourth proportional to 8,268.81, 12,398.53 and 2,720.66 is: 4,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,268.81 : 12,398.53 = 2,720.66 : x
  2. Step 2: Convert to fraction form
    8,268.81/12,398.53 = 2,720.66/x
  3. Step 3: Cross multiply
    8,268.81x = 12,398.53 × 2,720.66
  4. Step 4: Simplify right side
    8,268.81x = 33,732,184.63
  5. Step 5: Solve for x
    x = 33,732,184.63/8,268.81
  6. Step 6: Final answer
    x = 4,079.45

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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.