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Finding the Fourth Proportional to 10,625.58, 15,928.20 and 3,960.32

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Solution

The fourth proportional to 10,625.58, 15,928.20 and 3,960.32 is: 5,936.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,625.58 : 15,928.20 = 3,960.32 : x
  2. Step 2: Convert to fraction form
    10,625.58/15,928.20 = 3,960.32/x
  3. Step 3: Cross multiply
    10,625.58x = 15,928.20 × 3,960.32
  4. Step 4: Simplify right side
    10,625.58x = 63,080,689.38
  5. Step 5: Solve for x
    x = 63,080,689.38/10,625.58
  6. Step 6: Final answer
    x = 5,936.68

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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.