Home / 2,427.10-3,640.65-2,139.10

Finding the Fourth Proportional to 2,427.10, 3,640.65 and 2,139.10

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Solution

The fourth proportional to 2,427.10, 3,640.65 and 2,139.10 is: 3,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.10 : 3,640.65 = 2,139.10 : x
  2. Step 2: Convert to fraction form
    2,427.10/3,640.65 = 2,139.10/x
  3. Step 3: Cross multiply
    2,427.10x = 3,640.65 × 2,139.10
  4. Step 4: Simplify right side
    2,427.10x = 7,787,714.42
  5. Step 5: Solve for x
    x = 7,787,714.42/2,427.10
  6. Step 6: Final answer
    x = 3,208.65

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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.