Home / 2,114.55-3,177.90-2,078.10

Finding the Fourth Proportional to 2,114.55, 3,177.90 and 2,078.10

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Solution

The fourth proportional to 2,114.55, 3,177.90 and 2,078.10 is: 3,123.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.55 : 3,177.90 = 2,078.10 : x
  2. Step 2: Convert to fraction form
    2,114.55/3,177.90 = 2,078.10/x
  3. Step 3: Cross multiply
    2,114.55x = 3,177.90 × 2,078.10
  4. Step 4: Simplify right side
    2,114.55x = 6,603,993.99
  5. Step 5: Solve for x
    x = 6,603,993.99/2,114.55
  6. Step 6: Final answer
    x = 3,123.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.