Home / 7,015.78-10,523.67-1,821.25

Finding the Fourth Proportional to 7,015.78, 10,523.67 and 1,821.25

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Solution

The fourth proportional to 7,015.78, 10,523.67 and 1,821.25 is: 2,731.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.78 : 10,523.67 = 1,821.25 : x
  2. Step 2: Convert to fraction form
    7,015.78/10,523.67 = 1,821.25/x
  3. Step 3: Cross multiply
    7,015.78x = 10,523.67 × 1,821.25
  4. Step 4: Simplify right side
    7,015.78x = 19,166,233.99
  5. Step 5: Solve for x
    x = 19,166,233.99/7,015.78
  6. Step 6: Final answer
    x = 2,731.88

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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.