Home / 3,175.88-4,384.66-2,515.40

Finding the Fourth Proportional to 3,175.88, 4,384.66 and 2,515.40

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Solution

The fourth proportional to 3,175.88, 4,384.66 and 2,515.40 is: 3,472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.88 : 4,384.66 = 2,515.40 : x
  2. Step 2: Convert to fraction form
    3,175.88/4,384.66 = 2,515.40/x
  3. Step 3: Cross multiply
    3,175.88x = 4,384.66 × 2,515.40
  4. Step 4: Simplify right side
    3,175.88x = 11,029,173.76
  5. Step 5: Solve for x
    x = 11,029,173.76/3,175.88
  6. Step 6: Final answer
    x = 3,472.79

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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.