Home / 1,402.88-2,101.56-1,282.56

Finding the Fourth Proportional to 1,402.88, 2,101.56 and 1,282.56

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Solution

The fourth proportional to 1,402.88, 2,101.56 and 1,282.56 is: 1,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.88 : 2,101.56 = 1,282.56 : x
  2. Step 2: Convert to fraction form
    1,402.88/2,101.56 = 1,282.56/x
  3. Step 3: Cross multiply
    1,402.88x = 2,101.56 × 1,282.56
  4. Step 4: Simplify right side
    1,402.88x = 2,695,376.79
  5. Step 5: Solve for x
    x = 2,695,376.79/1,402.88
  6. Step 6: Final answer
    x = 1,921.32

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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.