Home / 1,421.32-1,960.56-1,049.26

Finding the Fourth Proportional to 1,421.32, 1,960.56 and 1,049.26

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Solution

The fourth proportional to 1,421.32, 1,960.56 and 1,049.26 is: 1,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.32 : 1,960.56 = 1,049.26 : x
  2. Step 2: Convert to fraction form
    1,421.32/1,960.56 = 1,049.26/x
  3. Step 3: Cross multiply
    1,421.32x = 1,960.56 × 1,049.26
  4. Step 4: Simplify right side
    1,421.32x = 2,057,137.19
  5. Step 5: Solve for x
    x = 2,057,137.19/1,421.32
  6. Step 6: Final answer
    x = 1,447.34

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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.