Home / 2,277.70-3,142.20-1,381.30

Finding the Fourth Proportional to 2,277.70, 3,142.20 and 1,381.30

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Solution

The fourth proportional to 2,277.70, 3,142.20 and 1,381.30 is: 1,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277.70 : 3,142.20 = 1,381.30 : x
  2. Step 2: Convert to fraction form
    2,277.70/3,142.20 = 1,381.30/x
  3. Step 3: Cross multiply
    2,277.70x = 3,142.20 × 1,381.30
  4. Step 4: Simplify right side
    2,277.70x = 4,340,320.86
  5. Step 5: Solve for x
    x = 4,340,320.86/2,277.70
  6. Step 6: Final answer
    x = 1,905.57

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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.