Home / 8,378.51-12,566.38-2,831.72

Finding the Fourth Proportional to 8,378.51, 12,566.38 and 2,831.72

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Solution

The fourth proportional to 8,378.51, 12,566.38 and 2,831.72 is: 4,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.51 : 12,566.38 = 2,831.72 : x
  2. Step 2: Convert to fraction form
    8,378.51/12,566.38 = 2,831.72/x
  3. Step 3: Cross multiply
    8,378.51x = 12,566.38 × 2,831.72
  4. Step 4: Simplify right side
    8,378.51x = 35,584,455.42
  5. Step 5: Solve for x
    x = 35,584,455.42/8,378.51
  6. Step 6: Final answer
    x = 4,247.11

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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.