Home / 1,422.84-2,133.36-1,057.56

Finding the Fourth Proportional to 1,422.84, 2,133.36 and 1,057.56

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Solution

The fourth proportional to 1,422.84, 2,133.36 and 1,057.56 is: 1,585.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.84 : 2,133.36 = 1,057.56 : x
  2. Step 2: Convert to fraction form
    1,422.84/2,133.36 = 1,057.56/x
  3. Step 3: Cross multiply
    1,422.84x = 2,133.36 × 1,057.56
  4. Step 4: Simplify right side
    1,422.84x = 2,256,156.20
  5. Step 5: Solve for x
    x = 2,256,156.20/1,422.84
  6. Step 6: Final answer
    x = 1,585.67

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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.