Home / 2,277.07-3,142.40-1,380.81

Finding the Fourth Proportional to 2,277.07, 3,142.40 and 1,380.81

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Solution

The fourth proportional to 2,277.07, 3,142.40 and 1,380.81 is: 1,905.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277.07 : 3,142.40 = 1,380.81 : x
  2. Step 2: Convert to fraction form
    2,277.07/3,142.40 = 1,380.81/x
  3. Step 3: Cross multiply
    2,277.07x = 3,142.40 × 1,380.81
  4. Step 4: Simplify right side
    2,277.07x = 4,339,045.08
  5. Step 5: Solve for x
    x = 4,339,045.08/2,277.07
  6. Step 6: Final answer
    x = 1,905.54

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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.