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Finding the Fourth Proportional to 8,398.47, 12,599.23 and 3,465.42

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Solution

The fourth proportional to 8,398.47, 12,599.23 and 3,465.42 is: 5,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.47 : 12,599.23 = 3,465.42 : x
  2. Step 2: Convert to fraction form
    8,398.47/12,599.23 = 3,465.42/x
  3. Step 3: Cross multiply
    8,398.47x = 12,599.23 × 3,465.42
  4. Step 4: Simplify right side
    8,398.47x = 43,661,623.63
  5. Step 5: Solve for x
    x = 43,661,623.63/8,398.47
  6. Step 6: Final answer
    x = 5,198.76

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1.5x scale

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.