Home / 3,156.22-4,353.87-1,977.04

Finding the Fourth Proportional to 3,156.22, 4,353.87 and 1,977.04

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Solution

The fourth proportional to 3,156.22, 4,353.87 and 1,977.04 is: 2,727.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.22 : 4,353.87 = 1,977.04 : x
  2. Step 2: Convert to fraction form
    3,156.22/4,353.87 = 1,977.04/x
  3. Step 3: Cross multiply
    3,156.22x = 4,353.87 × 1,977.04
  4. Step 4: Simplify right side
    3,156.22x = 8,607,775.14
  5. Step 5: Solve for x
    x = 8,607,775.14/3,156.22
  6. Step 6: Final answer
    x = 2,727.24

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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.