Home / 1,381.24-2,071.78-341.19

Finding the Fourth Proportional to 1,381.24, 2,071.78 and 341.19

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Solution

The fourth proportional to 1,381.24, 2,071.78 and 341.19 is: 511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.24 : 2,071.78 = 341.19 : x
  2. Step 2: Convert to fraction form
    1,381.24/2,071.78 = 341.19/x
  3. Step 3: Cross multiply
    1,381.24x = 2,071.78 × 341.19
  4. Step 4: Simplify right side
    1,381.24x = 706,870.62
  5. Step 5: Solve for x
    x = 706,870.62/1,381.24
  6. Step 6: Final answer
    x = 511.77

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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.