Home / 3,156.72-4,354.92-1,897.44

Finding the Fourth Proportional to 3,156.72, 4,354.92 and 1,897.44

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Solution

The fourth proportional to 3,156.72, 4,354.92 and 1,897.44 is: 2,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.72 : 4,354.92 = 1,897.44 : x
  2. Step 2: Convert to fraction form
    3,156.72/4,354.92 = 1,897.44/x
  3. Step 3: Cross multiply
    3,156.72x = 4,354.92 × 1,897.44
  4. Step 4: Simplify right side
    3,156.72x = 8,263,199.40
  5. Step 5: Solve for x
    x = 8,263,199.40/3,156.72
  6. Step 6: Final answer
    x = 2,617.65

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1.5x scale

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.