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Finding the Fourth Proportional to 8,433.79, 12,643.17 and 4,271.66

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Solution

The fourth proportional to 8,433.79, 12,643.17 and 4,271.66 is: 6,403.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,433.79 : 12,643.17 = 4,271.66 : x
  2. Step 2: Convert to fraction form
    8,433.79/12,643.17 = 4,271.66/x
  3. Step 3: Cross multiply
    8,433.79x = 12,643.17 × 4,271.66
  4. Step 4: Simplify right side
    8,433.79x = 54,007,248.79
  5. Step 5: Solve for x
    x = 54,007,248.79/8,433.79
  6. Step 6: Final answer
    x = 6,403.68

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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.