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Finding the Fourth Proportional to 5,376.12, 8,064.22 and 1,678.60

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Solution

The fourth proportional to 5,376.12, 8,064.22 and 1,678.60 is: 2,517.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.12 : 8,064.22 = 1,678.60 : x
  2. Step 2: Convert to fraction form
    5,376.12/8,064.22 = 1,678.60/x
  3. Step 3: Cross multiply
    5,376.12x = 8,064.22 × 1,678.60
  4. Step 4: Simplify right side
    5,376.12x = 13,536,599.69
  5. Step 5: Solve for x
    x = 13,536,599.69/5,376.12
  6. Step 6: Final answer
    x = 2,517.91

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1.5x scale

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.