Home / 2,515.49-3,471.39-1,396.45

Finding the Fourth Proportional to 2,515.49, 3,471.39 and 1,396.45

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Solution

The fourth proportional to 2,515.49, 3,471.39 and 1,396.45 is: 1,927.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.49 : 3,471.39 = 1,396.45 : x
  2. Step 2: Convert to fraction form
    2,515.49/3,471.39 = 1,396.45/x
  3. Step 3: Cross multiply
    2,515.49x = 3,471.39 × 1,396.45
  4. Step 4: Simplify right side
    2,515.49x = 4,847,622.57
  5. Step 5: Solve for x
    x = 4,847,622.57/2,515.49
  6. Step 6: Final answer
    x = 1,927.11

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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.