Home / 5,785.43-7,987.80-3,799.35

Finding the Fourth Proportional to 5,785.43, 7,987.80 and 3,799.35

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Solution

The fourth proportional to 5,785.43, 7,987.80 and 3,799.35 is: 5,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.43 : 7,987.80 = 3,799.35 : x
  2. Step 2: Convert to fraction form
    5,785.43/7,987.80 = 3,799.35/x
  3. Step 3: Cross multiply
    5,785.43x = 7,987.80 × 3,799.35
  4. Step 4: Simplify right side
    5,785.43x = 30,348,447.93
  5. Step 5: Solve for x
    x = 30,348,447.93/5,785.43
  6. Step 6: Final answer
    x = 5,245.67

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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.