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Finding the Fourth Proportional to 8,672.39, 13,005.50 and 3,124.24

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Solution

The fourth proportional to 8,672.39, 13,005.50 and 3,124.24 is: 4,685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.39 : 13,005.50 = 3,124.24 : x
  2. Step 2: Convert to fraction form
    8,672.39/13,005.50 = 3,124.24/x
  3. Step 3: Cross multiply
    8,672.39x = 13,005.50 × 3,124.24
  4. Step 4: Simplify right side
    8,672.39x = 40,632,303.32
  5. Step 5: Solve for x
    x = 40,632,303.32/8,672.39
  6. Step 6: Final answer
    x = 4,685.25

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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.