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Finding the Fourth Proportional to 5,376.38, 8,064.87 and 1,913.63

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Solution

The fourth proportional to 5,376.38, 8,064.87 and 1,913.63 is: 2,870.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.38 : 8,064.87 = 1,913.63 : x
  2. Step 2: Convert to fraction form
    5,376.38/8,064.87 = 1,913.63/x
  3. Step 3: Cross multiply
    5,376.38x = 8,064.87 × 1,913.63
  4. Step 4: Simplify right side
    5,376.38x = 15,433,129.68
  5. Step 5: Solve for x
    x = 15,433,129.68/5,376.38
  6. Step 6: Final answer
    x = 2,870.55

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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.