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Finding the Fourth Proportional to 3,893.95, 5,840.92 and 972.25

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Solution

The fourth proportional to 3,893.95, 5,840.92 and 972.25 is: 1,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.95 : 5,840.92 = 972.25 : x
  2. Step 2: Convert to fraction form
    3,893.95/5,840.92 = 972.25/x
  3. Step 3: Cross multiply
    3,893.95x = 5,840.92 × 972.25
  4. Step 4: Simplify right side
    3,893.95x = 5,678,842.99
  5. Step 5: Solve for x
    x = 5,678,842.99/3,893.95
  6. Step 6: Final answer
    x = 1,458.38

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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.