Home / 3,831.45-5,288.67-2,415.30

Finding the Fourth Proportional to 3,831.45, 5,288.67 and 2,415.30

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Solution

The fourth proportional to 3,831.45, 5,288.67 and 2,415.30 is: 3,333.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.45 : 5,288.67 = 2,415.30 : x
  2. Step 2: Convert to fraction form
    3,831.45/5,288.67 = 2,415.30/x
  3. Step 3: Cross multiply
    3,831.45x = 5,288.67 × 2,415.30
  4. Step 4: Simplify right side
    3,831.45x = 12,773,724.65
  5. Step 5: Solve for x
    x = 12,773,724.65/3,831.45
  6. Step 6: Final answer
    x = 3,333.91

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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.