Home / 2,177.89-3,006.21-1,381.76

Finding the Fourth Proportional to 2,177.89, 3,006.21 and 1,381.76

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Solution

The fourth proportional to 2,177.89, 3,006.21 and 1,381.76 is: 1,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.89 : 3,006.21 = 1,381.76 : x
  2. Step 2: Convert to fraction form
    2,177.89/3,006.21 = 1,381.76/x
  3. Step 3: Cross multiply
    2,177.89x = 3,006.21 × 1,381.76
  4. Step 4: Simplify right side
    2,177.89x = 4,153,862.15
  5. Step 5: Solve for x
    x = 4,153,862.15/2,177.89
  6. Step 6: Final answer
    x = 1,907.29

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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.