Home / 10,081.75-15,122.63-2,785.75

Finding the Fourth Proportional to 10,081.75, 15,122.63 and 2,785.75

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Solution

The fourth proportional to 10,081.75, 15,122.63 and 2,785.75 is: 4,178.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.75 : 15,122.63 = 2,785.75 : x
  2. Step 2: Convert to fraction form
    10,081.75/15,122.63 = 2,785.75/x
  3. Step 3: Cross multiply
    10,081.75x = 15,122.63 × 2,785.75
  4. Step 4: Simplify right side
    10,081.75x = 42,127,866.52
  5. Step 5: Solve for x
    x = 42,127,866.52/10,081.75
  6. Step 6: Final answer
    x = 4,178.63

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Similar ratio
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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.