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Finding the Fourth Proportional to 8,783.46, 13,175.46 and 2,939.40

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Solution

The fourth proportional to 8,783.46, 13,175.46 and 2,939.40 is: 4,409.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.46 : 13,175.46 = 2,939.40 : x
  2. Step 2: Convert to fraction form
    8,783.46/13,175.46 = 2,939.40/x
  3. Step 3: Cross multiply
    8,783.46x = 13,175.46 × 2,939.40
  4. Step 4: Simplify right side
    8,783.46x = 38,727,947.12
  5. Step 5: Solve for x
    x = 38,727,947.12/8,783.46
  6. Step 6: Final answer
    x = 4,409.19

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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.