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Finding the Fourth Proportional to 8,643.24, 12,964.43 and 2,403.20

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Solution

The fourth proportional to 8,643.24, 12,964.43 and 2,403.20 is: 3,604.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.24 : 12,964.43 = 2,403.20 : x
  2. Step 2: Convert to fraction form
    8,643.24/12,964.43 = 2,403.20/x
  3. Step 3: Cross multiply
    8,643.24x = 12,964.43 × 2,403.20
  4. Step 4: Simplify right side
    8,643.24x = 31,156,041.34
  5. Step 5: Solve for x
    x = 31,156,041.34/8,643.24
  6. Step 6: Final answer
    x = 3,604.67

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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.