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Finding the Fourth Proportional to 6,361.80, 8,783.65 and 4,867.11

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Solution

The fourth proportional to 6,361.80, 8,783.65 and 4,867.11 is: 6,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.80 : 8,783.65 = 4,867.11 : x
  2. Step 2: Convert to fraction form
    6,361.80/8,783.65 = 4,867.11/x
  3. Step 3: Cross multiply
    6,361.80x = 8,783.65 × 4,867.11
  4. Step 4: Simplify right side
    6,361.80x = 42,750,990.75
  5. Step 5: Solve for x
    x = 42,750,990.75/6,361.80
  6. Step 6: Final answer
    x = 6,719.95

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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.