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Finding the Fourth Proportional to 3,720.18, 5,583.90 and 2,077.90

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Solution

The fourth proportional to 3,720.18, 5,583.90 and 2,077.90 is: 3,118.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.18 : 5,583.90 = 2,077.90 : x
  2. Step 2: Convert to fraction form
    3,720.18/5,583.90 = 2,077.90/x
  3. Step 3: Cross multiply
    3,720.18x = 5,583.90 × 2,077.90
  4. Step 4: Simplify right side
    3,720.18x = 11,602,785.81
  5. Step 5: Solve for x
    x = 11,602,785.81/3,720.18
  6. Step 6: Final answer
    x = 3,118.88

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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.