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Finding the Fourth Proportional to 3,572.89, 4,931.18 and 2,081.68

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Solution

The fourth proportional to 3,572.89, 4,931.18 and 2,081.68 is: 2,873.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.89 : 4,931.18 = 2,081.68 : x
  2. Step 2: Convert to fraction form
    3,572.89/4,931.18 = 2,081.68/x
  3. Step 3: Cross multiply
    3,572.89x = 4,931.18 × 2,081.68
  4. Step 4: Simplify right side
    3,572.89x = 10,265,131.66
  5. Step 5: Solve for x
    x = 10,265,131.66/3,572.89
  6. Step 6: Final answer
    x = 2,873.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.