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Finding the Fourth Proportional to 8,673.88, 13,007.76 and 3,125.74

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Solution

The fourth proportional to 8,673.88, 13,007.76 and 3,125.74 is: 4,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.88 : 13,007.76 = 3,125.74 : x
  2. Step 2: Convert to fraction form
    8,673.88/13,007.76 = 3,125.74/x
  3. Step 3: Cross multiply
    8,673.88x = 13,007.76 × 3,125.74
  4. Step 4: Simplify right side
    8,673.88x = 40,658,875.74
  5. Step 5: Solve for x
    x = 40,658,875.74/8,673.88
  6. Step 6: Final answer
    x = 4,687.51

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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.