Home / 5,414.40-8,116.80-4,831.20

Finding the Fourth Proportional to 5,414.40, 8,116.80 and 4,831.20

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Solution

The fourth proportional to 5,414.40, 8,116.80 and 4,831.20 is: 7,242.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.40 : 8,116.80 = 4,831.20 : x
  2. Step 2: Convert to fraction form
    5,414.40/8,116.80 = 4,831.20/x
  3. Step 3: Cross multiply
    5,414.40x = 8,116.80 × 4,831.20
  4. Step 4: Simplify right side
    5,414.40x = 39,213,884.16
  5. Step 5: Solve for x
    x = 39,213,884.16/5,414.40
  6. Step 6: Final answer
    x = 7,242.52

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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.