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Finding the Fourth Proportional to 3,164.00, 4,745.05 and 972.68

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Solution

The fourth proportional to 3,164.00, 4,745.05 and 972.68 is: 1,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,164.00 : 4,745.05 = 972.68 : x
  2. Step 2: Convert to fraction form
    3,164.00/4,745.05 = 972.68/x
  3. Step 3: Cross multiply
    3,164.00x = 4,745.05 × 972.68
  4. Step 4: Simplify right side
    3,164.00x = 4,615,389.08
  5. Step 5: Solve for x
    x = 4,615,389.08/3,164.00
  6. Step 6: Final answer
    x = 1,458.72

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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.