Home / 8,218.79-12,328.86-2,672.01

Finding the Fourth Proportional to 8,218.79, 12,328.86 and 2,672.01

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Solution

The fourth proportional to 8,218.79, 12,328.86 and 2,672.01 is: 4,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.79 : 12,328.86 = 2,672.01 : x
  2. Step 2: Convert to fraction form
    8,218.79/12,328.86 = 2,672.01/x
  3. Step 3: Cross multiply
    8,218.79x = 12,328.86 × 2,672.01
  4. Step 4: Simplify right side
    8,218.79x = 32,942,837.21
  5. Step 5: Solve for x
    x = 32,942,837.21/8,218.79
  6. Step 6: Final answer
    x = 4,008.23

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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.