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Finding the Fourth Proportional to 8,672.61, 13,007.45 and 2,431.19

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Solution

The fourth proportional to 8,672.61, 13,007.45 and 2,431.19 is: 3,646.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.61 : 13,007.45 = 2,431.19 : x
  2. Step 2: Convert to fraction form
    8,672.61/13,007.45 = 2,431.19/x
  3. Step 3: Cross multiply
    8,672.61x = 13,007.45 × 2,431.19
  4. Step 4: Simplify right side
    8,672.61x = 31,623,582.37
  5. Step 5: Solve for x
    x = 31,623,582.37/8,672.61
  6. Step 6: Final answer
    x = 3,646.37

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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.