Home / 2,931.20-4,046.94-2,615.92

Finding the Fourth Proportional to 2,931.20, 4,046.94 and 2,615.92

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Solution

The fourth proportional to 2,931.20, 4,046.94 and 2,615.92 is: 3,611.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.20 : 4,046.94 = 2,615.92 : x
  2. Step 2: Convert to fraction form
    2,931.20/4,046.94 = 2,615.92/x
  3. Step 3: Cross multiply
    2,931.20x = 4,046.94 × 2,615.92
  4. Step 4: Simplify right side
    2,931.20x = 10,586,487.94
  5. Step 5: Solve for x
    x = 10,586,487.94/2,931.20
  6. Step 6: Final answer
    x = 3,611.66

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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.