Home / 1,121.29-1,682.01-341.35

Finding the Fourth Proportional to 1,121.29, 1,682.01 and 341.35

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Solution

The fourth proportional to 1,121.29, 1,682.01 and 341.35 is: 512.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.29 : 1,682.01 = 341.35 : x
  2. Step 2: Convert to fraction form
    1,121.29/1,682.01 = 341.35/x
  3. Step 3: Cross multiply
    1,121.29x = 1,682.01 × 341.35
  4. Step 4: Simplify right side
    1,121.29x = 574,154.11
  5. Step 5: Solve for x
    x = 574,154.11/1,121.29
  6. Step 6: Final answer
    x = 512.05

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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.