Home / 5,240.56-7,859.20-1,777

Finding the Fourth Proportional to 5,240.56, 7,859.20 and 1,777

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Solution

The fourth proportional to 5,240.56, 7,859.20 and 1,777 is: 2,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.56 : 7,859.20 = 1,777 : x
  2. Step 2: Convert to fraction form
    5,240.56/7,859.20 = 1,777/x
  3. Step 3: Cross multiply
    5,240.56x = 7,859.20 × 1,777
  4. Step 4: Simplify right side
    5,240.56x = 13,965,798.40
  5. Step 5: Solve for x
    x = 13,965,798.40/5,240.56
  6. Step 6: Final answer
    x = 2,664.94

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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.