Home / 1,389.20-2,074.13-1,250.96

Finding the Fourth Proportional to 1,389.20, 2,074.13 and 1,250.96

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Solution

The fourth proportional to 1,389.20, 2,074.13 and 1,250.96 is: 1,867.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.20 : 2,074.13 = 1,250.96 : x
  2. Step 2: Convert to fraction form
    1,389.20/2,074.13 = 1,250.96/x
  3. Step 3: Cross multiply
    1,389.20x = 2,074.13 × 1,250.96
  4. Step 4: Simplify right side
    1,389.20x = 2,594,653.66
  5. Step 5: Solve for x
    x = 2,594,653.66/1,389.20
  6. Step 6: Final answer
    x = 1,867.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.