Home / 1,422.15-2,133.23-1,330.35

Finding the Fourth Proportional to 1,422.15, 2,133.23 and 1,330.35

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Solution

The fourth proportional to 1,422.15, 2,133.23 and 1,330.35 is: 1,995.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.15 : 2,133.23 = 1,330.35 : x
  2. Step 2: Convert to fraction form
    1,422.15/2,133.23 = 1,330.35/x
  3. Step 3: Cross multiply
    1,422.15x = 2,133.23 × 1,330.35
  4. Step 4: Simplify right side
    1,422.15x = 2,837,935.88
  5. Step 5: Solve for x
    x = 2,837,935.88/1,422.15
  6. Step 6: Final answer
    x = 1,995.53

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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.