Home / 10,255.39-15,382.62-2,859.70

Finding the Fourth Proportional to 10,255.39, 15,382.62 and 2,859.70

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Solution

The fourth proportional to 10,255.39, 15,382.62 and 2,859.70 is: 4,289.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.39 : 15,382.62 = 2,859.70 : x
  2. Step 2: Convert to fraction form
    10,255.39/15,382.62 = 2,859.70/x
  3. Step 3: Cross multiply
    10,255.39x = 15,382.62 × 2,859.70
  4. Step 4: Simplify right side
    10,255.39x = 43,989,678.41
  5. Step 5: Solve for x
    x = 43,989,678.41/10,255.39
  6. Step 6: Final answer
    x = 4,289.42

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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.