Home / 5,729.11-7,905.78-3,210.79

Finding the Fourth Proportional to 5,729.11, 7,905.78 and 3,210.79

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Solution

The fourth proportional to 5,729.11, 7,905.78 and 3,210.79 is: 4,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.11 : 7,905.78 = 3,210.79 : x
  2. Step 2: Convert to fraction form
    5,729.11/7,905.78 = 3,210.79/x
  3. Step 3: Cross multiply
    5,729.11x = 7,905.78 × 3,210.79
  4. Step 4: Simplify right side
    5,729.11x = 25,383,799.37
  5. Step 5: Solve for x
    x = 25,383,799.37/5,729.11
  6. Step 6: Final answer
    x = 4,430.67

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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.