Home / 2,125.32-2,933.13-1,286.23

Finding the Fourth Proportional to 2,125.32, 2,933.13 and 1,286.23

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Solution

The fourth proportional to 2,125.32, 2,933.13 and 1,286.23 is: 1,775.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.32 : 2,933.13 = 1,286.23 : x
  2. Step 2: Convert to fraction form
    2,125.32/2,933.13 = 1,286.23/x
  3. Step 3: Cross multiply
    2,125.32x = 2,933.13 × 1,286.23
  4. Step 4: Simplify right side
    2,125.32x = 3,772,679.80
  5. Step 5: Solve for x
    x = 3,772,679.80/2,125.32
  6. Step 6: Final answer
    x = 1,775.11

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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.