Home / 8,220.51-12,328.18-2,672.57

Finding the Fourth Proportional to 8,220.51, 12,328.18 and 2,672.57

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Solution

The fourth proportional to 8,220.51, 12,328.18 and 2,672.57 is: 4,008.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.51 : 12,328.18 = 2,672.57 : x
  2. Step 2: Convert to fraction form
    8,220.51/12,328.18 = 2,672.57/x
  3. Step 3: Cross multiply
    8,220.51x = 12,328.18 × 2,672.57
  4. Step 4: Simplify right side
    8,220.51x = 32,947,948.16
  5. Step 5: Solve for x
    x = 32,947,948.16/8,220.51
  6. Step 6: Final answer
    x = 4,008.02

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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.