Home / 3,905.80-5,859.56-1,308.67

Finding the Fourth Proportional to 3,905.80, 5,859.56 and 1,308.67

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Solution

The fourth proportional to 3,905.80, 5,859.56 and 1,308.67 is: 1,963.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.80 : 5,859.56 = 1,308.67 : x
  2. Step 2: Convert to fraction form
    3,905.80/5,859.56 = 1,308.67/x
  3. Step 3: Cross multiply
    3,905.80x = 5,859.56 × 1,308.67
  4. Step 4: Simplify right side
    3,905.80x = 7,668,223.84
  5. Step 5: Solve for x
    x = 7,668,223.84/3,905.80
  6. Step 6: Final answer
    x = 1,963.29

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1.5x scale

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.