Home / 3,515.82-5,273.72-918.76

Finding the Fourth Proportional to 3,515.82, 5,273.72 and 918.76

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Solution

The fourth proportional to 3,515.82, 5,273.72 and 918.76 is: 1,378.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.82 : 5,273.72 = 918.76 : x
  2. Step 2: Convert to fraction form
    3,515.82/5,273.72 = 918.76/x
  3. Step 3: Cross multiply
    3,515.82x = 5,273.72 × 918.76
  4. Step 4: Simplify right side
    3,515.82x = 4,845,282.99
  5. Step 5: Solve for x
    x = 4,845,282.99/3,515.82
  6. Step 6: Final answer
    x = 1,378.14

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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.