Home / 8,328.43-12,492.63-2,172.43

Finding the Fourth Proportional to 8,328.43, 12,492.63 and 2,172.43

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Solution

The fourth proportional to 8,328.43, 12,492.63 and 2,172.43 is: 3,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.43 : 12,492.63 = 2,172.43 : x
  2. Step 2: Convert to fraction form
    8,328.43/12,492.63 = 2,172.43/x
  3. Step 3: Cross multiply
    8,328.43x = 12,492.63 × 2,172.43
  4. Step 4: Simplify right side
    8,328.43x = 27,139,332.96
  5. Step 5: Solve for x
    x = 27,139,332.96/8,328.43
  6. Step 6: Final answer
    x = 3,258.64

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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.