Home / 5,615.88-7,750.92-3,518.78

Finding the Fourth Proportional to 5,615.88, 7,750.92 and 3,518.78

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Solution

The fourth proportional to 5,615.88, 7,750.92 and 3,518.78 is: 4,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.88 : 7,750.92 = 3,518.78 : x
  2. Step 2: Convert to fraction form
    5,615.88/7,750.92 = 3,518.78/x
  3. Step 3: Cross multiply
    5,615.88x = 7,750.92 × 3,518.78
  4. Step 4: Simplify right side
    5,615.88x = 27,273,782.28
  5. Step 5: Solve for x
    x = 27,273,782.28/5,615.88
  6. Step 6: Final answer
    x = 4,856.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.