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Finding the Fourth Proportional to 3,173.58, 4,760.28 and 865.08

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Solution

The fourth proportional to 3,173.58, 4,760.28 and 865.08 is: 1,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.58 : 4,760.28 = 865.08 : x
  2. Step 2: Convert to fraction form
    3,173.58/4,760.28 = 865.08/x
  3. Step 3: Cross multiply
    3,173.58x = 4,760.28 × 865.08
  4. Step 4: Simplify right side
    3,173.58x = 4,118,023.02
  5. Step 5: Solve for x
    x = 4,118,023.02/3,173.58
  6. Step 6: Final answer
    x = 1,297.60

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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.