Home / 3,155.11-4,354.08-1,976.87

Finding the Fourth Proportional to 3,155.11, 4,354.08 and 1,976.87

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Solution

The fourth proportional to 3,155.11, 4,354.08 and 1,976.87 is: 2,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.11 : 4,354.08 = 1,976.87 : x
  2. Step 2: Convert to fraction form
    3,155.11/4,354.08 = 1,976.87/x
  3. Step 3: Cross multiply
    3,155.11x = 4,354.08 × 1,976.87
  4. Step 4: Simplify right side
    3,155.11x = 8,607,450.13
  5. Step 5: Solve for x
    x = 8,607,450.13/3,155.11
  6. Step 6: Final answer
    x = 2,728.10

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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.