Home / 2,170.40-2,993.66-1,384.09

Finding the Fourth Proportional to 2,170.40, 2,993.66 and 1,384.09

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Solution

The fourth proportional to 2,170.40, 2,993.66 and 1,384.09 is: 1,909.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.40 : 2,993.66 = 1,384.09 : x
  2. Step 2: Convert to fraction form
    2,170.40/2,993.66 = 1,384.09/x
  3. Step 3: Cross multiply
    2,170.40x = 2,993.66 × 1,384.09
  4. Step 4: Simplify right side
    2,170.40x = 4,143,485.66
  5. Step 5: Solve for x
    x = 4,143,485.66/2,170.40
  6. Step 6: Final answer
    x = 1,909.09

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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.