Home / 4,720.20-6,511.87-2,831.18

Finding the Fourth Proportional to 4,720.20, 6,511.87 and 2,831.18

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Solution

The fourth proportional to 4,720.20, 6,511.87 and 2,831.18 is: 3,905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.20 : 6,511.87 = 2,831.18 : x
  2. Step 2: Convert to fraction form
    4,720.20/6,511.87 = 2,831.18/x
  3. Step 3: Cross multiply
    4,720.20x = 6,511.87 × 2,831.18
  4. Step 4: Simplify right side
    4,720.20x = 18,436,257.44
  5. Step 5: Solve for x
    x = 18,436,257.44/4,720.20
  6. Step 6: Final answer
    x = 3,905.82

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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.