Home / 5,185.56-7,778.73-1,487.76

Finding the Fourth Proportional to 5,185.56, 7,778.73 and 1,487.76

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Solution

The fourth proportional to 5,185.56, 7,778.73 and 1,487.76 is: 2,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.56 : 7,778.73 = 1,487.76 : x
  2. Step 2: Convert to fraction form
    5,185.56/7,778.73 = 1,487.76/x
  3. Step 3: Cross multiply
    5,185.56x = 7,778.73 × 1,487.76
  4. Step 4: Simplify right side
    5,185.56x = 11,572,883.34
  5. Step 5: Solve for x
    x = 11,572,883.34/5,185.56
  6. Step 6: Final answer
    x = 2,231.75

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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.