Home / 3,240.28-4,860.42-931.84

Finding the Fourth Proportional to 3,240.28, 4,860.42 and 931.84

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Solution

The fourth proportional to 3,240.28, 4,860.42 and 931.84 is: 1,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.28 : 4,860.42 = 931.84 : x
  2. Step 2: Convert to fraction form
    3,240.28/4,860.42 = 931.84/x
  3. Step 3: Cross multiply
    3,240.28x = 4,860.42 × 931.84
  4. Step 4: Simplify right side
    3,240.28x = 4,529,133.77
  5. Step 5: Solve for x
    x = 4,529,133.77/3,240.28
  6. Step 6: Final answer
    x = 1,397.76

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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.