Home / 5,240.35-7,857.28-1,777.87

Finding the Fourth Proportional to 5,240.35, 7,857.28 and 1,777.87

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Solution

The fourth proportional to 5,240.35, 7,857.28 and 1,777.87 is: 2,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.35 : 7,857.28 = 1,777.87 : x
  2. Step 2: Convert to fraction form
    5,240.35/7,857.28 = 1,777.87/x
  3. Step 3: Cross multiply
    5,240.35x = 7,857.28 × 1,777.87
  4. Step 4: Simplify right side
    5,240.35x = 13,969,222.39
  5. Step 5: Solve for x
    x = 13,969,222.39/5,240.35
  6. Step 6: Final answer
    x = 2,665.70

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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.