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Finding the Fourth Proportional to 8,672.19, 13,005.09 and 3,124.05

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Solution

The fourth proportional to 8,672.19, 13,005.09 and 3,124.05 is: 4,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.19 : 13,005.09 = 3,124.05 : x
  2. Step 2: Convert to fraction form
    8,672.19/13,005.09 = 3,124.05/x
  3. Step 3: Cross multiply
    8,672.19x = 13,005.09 × 3,124.05
  4. Step 4: Simplify right side
    8,672.19x = 40,628,502.65
  5. Step 5: Solve for x
    x = 40,628,502.65/8,672.19
  6. Step 6: Final answer
    x = 4,684.92

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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.