Home / 3,718.12-5,577.21-1,120.72

Finding the Fourth Proportional to 3,718.12, 5,577.21 and 1,120.72

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Solution

The fourth proportional to 3,718.12, 5,577.21 and 1,120.72 is: 1,681.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.12 : 5,577.21 = 1,120.72 : x
  2. Step 2: Convert to fraction form
    3,718.12/5,577.21 = 1,120.72/x
  3. Step 3: Cross multiply
    3,718.12x = 5,577.21 × 1,120.72
  4. Step 4: Simplify right side
    3,718.12x = 6,250,490.79
  5. Step 5: Solve for x
    x = 6,250,490.79/3,718.12
  6. Step 6: Final answer
    x = 1,681.09

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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.