Home / 10,185.75-15,278.63-3,260.25

Finding the Fourth Proportional to 10,185.75, 15,278.63 and 3,260.25

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Solution

The fourth proportional to 10,185.75, 15,278.63 and 3,260.25 is: 4,890.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.75 : 15,278.63 = 3,260.25 : x
  2. Step 2: Convert to fraction form
    10,185.75/15,278.63 = 3,260.25/x
  3. Step 3: Cross multiply
    10,185.75x = 15,278.63 × 3,260.25
  4. Step 4: Simplify right side
    10,185.75x = 49,812,137.16
  5. Step 5: Solve for x
    x = 49,812,137.16/10,185.75
  6. Step 6: Final answer
    x = 4,890.38

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Double scale
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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.