Home / 2,985.11-4,474.45-1,889.79

Finding the Fourth Proportional to 2,985.11, 4,474.45 and 1,889.79

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Solution

The fourth proportional to 2,985.11, 4,474.45 and 1,889.79 is: 2,832.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.11 : 4,474.45 = 1,889.79 : x
  2. Step 2: Convert to fraction form
    2,985.11/4,474.45 = 1,889.79/x
  3. Step 3: Cross multiply
    2,985.11x = 4,474.45 × 1,889.79
  4. Step 4: Simplify right side
    2,985.11x = 8,455,761.42
  5. Step 5: Solve for x
    x = 8,455,761.42/2,985.11
  6. Step 6: Final answer
    x = 2,832.65

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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.