Home / 3,921.42-5,881.50-1,288.14

Finding the Fourth Proportional to 3,921.42, 5,881.50 and 1,288.14

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Solution

The fourth proportional to 3,921.42, 5,881.50 and 1,288.14 is: 1,932.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.42 : 5,881.50 = 1,288.14 : x
  2. Step 2: Convert to fraction form
    3,921.42/5,881.50 = 1,288.14/x
  3. Step 3: Cross multiply
    3,921.42x = 5,881.50 × 1,288.14
  4. Step 4: Simplify right side
    3,921.42x = 7,576,195.41
  5. Step 5: Solve for x
    x = 7,576,195.41/3,921.42
  6. Step 6: Final answer
    x = 1,932.00

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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.