Home / 2,420.77-3,631.11-1,186.87

Finding the Fourth Proportional to 2,420.77, 3,631.11 and 1,186.87

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Solution

The fourth proportional to 2,420.77, 3,631.11 and 1,186.87 is: 1,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.77 : 3,631.11 = 1,186.87 : x
  2. Step 2: Convert to fraction form
    2,420.77/3,631.11 = 1,186.87/x
  3. Step 3: Cross multiply
    2,420.77x = 3,631.11 × 1,186.87
  4. Step 4: Simplify right side
    2,420.77x = 4,309,655.53
  5. Step 5: Solve for x
    x = 4,309,655.53/2,420.77
  6. Step 6: Final answer
    x = 1,780.28

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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.