Home / 2,177.87-3,006.14-1,391.92

Finding the Fourth Proportional to 2,177.87, 3,006.14 and 1,391.92

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Solution

The fourth proportional to 2,177.87, 3,006.14 and 1,391.92 is: 1,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.87 : 3,006.14 = 1,391.92 : x
  2. Step 2: Convert to fraction form
    2,177.87/3,006.14 = 1,391.92/x
  3. Step 3: Cross multiply
    2,177.87x = 3,006.14 × 1,391.92
  4. Step 4: Simplify right side
    2,177.87x = 4,184,291.91
  5. Step 5: Solve for x
    x = 4,184,291.91/2,177.87
  6. Step 6: Final answer
    x = 1,921.28

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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.