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Finding the Fourth Proportional to 3,712.53, 5,570.01 and 1,980.75

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Solution

The fourth proportional to 3,712.53, 5,570.01 and 1,980.75 is: 2,971.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.53 : 5,570.01 = 1,980.75 : x
  2. Step 2: Convert to fraction form
    3,712.53/5,570.01 = 1,980.75/x
  3. Step 3: Cross multiply
    3,712.53x = 5,570.01 × 1,980.75
  4. Step 4: Simplify right side
    3,712.53x = 11,032,797.31
  5. Step 5: Solve for x
    x = 11,032,797.31/3,712.53
  6. Step 6: Final answer
    x = 2,971.77

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.