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Finding the Fourth Proportional to 6,439.57, 8,888.27 and 3,787.83

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Solution

The fourth proportional to 6,439.57, 8,888.27 and 3,787.83 is: 5,228.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.57 : 8,888.27 = 3,787.83 : x
  2. Step 2: Convert to fraction form
    6,439.57/8,888.27 = 3,787.83/x
  3. Step 3: Cross multiply
    6,439.57x = 8,888.27 × 3,787.83
  4. Step 4: Simplify right side
    6,439.57x = 33,667,236.81
  5. Step 5: Solve for x
    x = 33,667,236.81/6,439.57
  6. Step 6: Final answer
    x = 5,228.18

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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.