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Finding the Fourth Proportional to 5,680.64, 8,518.08 and 2,600

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Solution

The fourth proportional to 5,680.64, 8,518.08 and 2,600 is: 3,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.64 : 8,518.08 = 2,600 : x
  2. Step 2: Convert to fraction form
    5,680.64/8,518.08 = 2,600/x
  3. Step 3: Cross multiply
    5,680.64x = 8,518.08 × 2,600
  4. Step 4: Simplify right side
    5,680.64x = 22,147,008
  5. Step 5: Solve for x
    x = 22,147,008/5,680.64
  6. Step 6: Final answer
    x = 3,898.68

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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.