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Finding the Fourth Proportional to 2,665.16, 3,997.74 and 933.78

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Solution

The fourth proportional to 2,665.16, 3,997.74 and 933.78 is: 1,400.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.16 : 3,997.74 = 933.78 : x
  2. Step 2: Convert to fraction form
    2,665.16/3,997.74 = 933.78/x
  3. Step 3: Cross multiply
    2,665.16x = 3,997.74 × 933.78
  4. Step 4: Simplify right side
    2,665.16x = 3,733,009.66
  5. Step 5: Solve for x
    x = 3,733,009.66/2,665.16
  6. Step 6: Final answer
    x = 1,400.67

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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.