Home / 1,431.19-2,146.79-506.95

Finding the Fourth Proportional to 1,431.19, 2,146.79 and 506.95

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Solution

The fourth proportional to 1,431.19, 2,146.79 and 506.95 is: 760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.19 : 2,146.79 = 506.95 : x
  2. Step 2: Convert to fraction form
    1,431.19/2,146.79 = 506.95/x
  3. Step 3: Cross multiply
    1,431.19x = 2,146.79 × 506.95
  4. Step 4: Simplify right side
    1,431.19x = 1,088,315.19
  5. Step 5: Solve for x
    x = 1,088,315.19/1,431.19
  6. Step 6: Final answer
    x = 760.43

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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.