Home / 8,625.28-12,939.57-2,780.32

Finding the Fourth Proportional to 8,625.28, 12,939.57 and 2,780.32

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Solution

The fourth proportional to 8,625.28, 12,939.57 and 2,780.32 is: 4,171.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.28 : 12,939.57 = 2,780.32 : x
  2. Step 2: Convert to fraction form
    8,625.28/12,939.57 = 2,780.32/x
  3. Step 3: Cross multiply
    8,625.28x = 12,939.57 × 2,780.32
  4. Step 4: Simplify right side
    8,625.28x = 35,976,145.26
  5. Step 5: Solve for x
    x = 35,976,145.26/8,625.28
  6. Step 6: Final answer
    x = 4,171.01

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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.