Home / 5,675-7,831.22-3,156.98

Finding the Fourth Proportional to 5,675, 7,831.22 and 3,156.98

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Solution

The fourth proportional to 5,675, 7,831.22 and 3,156.98 is: 4,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,675 : 7,831.22 = 3,156.98 : x
  2. Step 2: Convert to fraction form
    5,675/7,831.22 = 3,156.98/x
  3. Step 3: Cross multiply
    5,675x = 7,831.22 × 3,156.98
  4. Step 4: Simplify right side
    5,675x = 24,723,004.92
  5. Step 5: Solve for x
    x = 24,723,004.92/5,675
  6. Step 6: Final answer
    x = 4,356.48

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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.