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Finding the Fourth Proportional to 5,638.44, 8,455.86 and 1,742.70

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Solution

The fourth proportional to 5,638.44, 8,455.86 and 1,742.70 is: 2,613.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.44 : 8,455.86 = 1,742.70 : x
  2. Step 2: Convert to fraction form
    5,638.44/8,455.86 = 1,742.70/x
  3. Step 3: Cross multiply
    5,638.44x = 8,455.86 × 1,742.70
  4. Step 4: Simplify right side
    5,638.44x = 14,736,027.22
  5. Step 5: Solve for x
    x = 14,736,027.22/5,638.44
  6. Step 6: Final answer
    x = 2,613.49

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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.