Home / 1,525.12-2,286.24-1,389.88

Finding the Fourth Proportional to 1,525.12, 2,286.24 and 1,389.88

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Solution

The fourth proportional to 1,525.12, 2,286.24 and 1,389.88 is: 2,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.12 : 2,286.24 = 1,389.88 : x
  2. Step 2: Convert to fraction form
    1,525.12/2,286.24 = 1,389.88/x
  3. Step 3: Cross multiply
    1,525.12x = 2,286.24 × 1,389.88
  4. Step 4: Simplify right side
    1,525.12x = 3,177,599.25
  5. Step 5: Solve for x
    x = 3,177,599.25/1,525.12
  6. Step 6: Final answer
    x = 2,083.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.