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Finding the Fourth Proportional to 6,145.80, 8,480.88 and 3,787.08

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Solution

The fourth proportional to 6,145.80, 8,480.88 and 3,787.08 is: 5,225.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145.80 : 8,480.88 = 3,787.08 : x
  2. Step 2: Convert to fraction form
    6,145.80/8,480.88 = 3,787.08/x
  3. Step 3: Cross multiply
    6,145.80x = 8,480.88 × 3,787.08
  4. Step 4: Simplify right side
    6,145.80x = 32,117,771.03
  5. Step 5: Solve for x
    x = 32,117,771.03/6,145.80
  6. Step 6: Final answer
    x = 5,225.97

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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.