Home / 1,640.42-2,442.06-1,630.68

Finding the Fourth Proportional to 1,640.42, 2,442.06 and 1,630.68

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Solution

The fourth proportional to 1,640.42, 2,442.06 and 1,630.68 is: 2,427.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.42 : 2,442.06 = 1,630.68 : x
  2. Step 2: Convert to fraction form
    1,640.42/2,442.06 = 1,630.68/x
  3. Step 3: Cross multiply
    1,640.42x = 2,442.06 × 1,630.68
  4. Step 4: Simplify right side
    1,640.42x = 3,982,218.40
  5. Step 5: Solve for x
    x = 3,982,218.40/1,640.42
  6. Step 6: Final answer
    x = 2,427.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.