Home / 3,167.40-4,372.10-1,909.16

Finding the Fourth Proportional to 3,167.40, 4,372.10 and 1,909.16

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Solution

The fourth proportional to 3,167.40, 4,372.10 and 1,909.16 is: 2,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.40 : 4,372.10 = 1,909.16 : x
  2. Step 2: Convert to fraction form
    3,167.40/4,372.10 = 1,909.16/x
  3. Step 3: Cross multiply
    3,167.40x = 4,372.10 × 1,909.16
  4. Step 4: Simplify right side
    3,167.40x = 8,347,038.44
  5. Step 5: Solve for x
    x = 8,347,038.44/3,167.40
  6. Step 6: Final answer
    x = 2,635.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.