Home / 5,686.85-7,847.78-3,169.07

Finding the Fourth Proportional to 5,686.85, 7,847.78 and 3,169.07

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Solution

The fourth proportional to 5,686.85, 7,847.78 and 3,169.07 is: 4,373.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.85 : 7,847.78 = 3,169.07 : x
  2. Step 2: Convert to fraction form
    5,686.85/7,847.78 = 3,169.07/x
  3. Step 3: Cross multiply
    5,686.85x = 7,847.78 × 3,169.07
  4. Step 4: Simplify right side
    5,686.85x = 24,870,138.51
  5. Step 5: Solve for x
    x = 24,870,138.51/5,686.85
  6. Step 6: Final answer
    x = 4,373.27

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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.