Home / 5,123.09-7,684.29-1,425.35

Finding the Fourth Proportional to 5,123.09, 7,684.29 and 1,425.35

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Solution

The fourth proportional to 5,123.09, 7,684.29 and 1,425.35 is: 2,137.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.09 : 7,684.29 = 1,425.35 : x
  2. Step 2: Convert to fraction form
    5,123.09/7,684.29 = 1,425.35/x
  3. Step 3: Cross multiply
    5,123.09x = 7,684.29 × 1,425.35
  4. Step 4: Simplify right side
    5,123.09x = 10,952,821.96
  5. Step 5: Solve for x
    x = 10,952,821.96/5,123.09
  6. Step 6: Final answer
    x = 2,137.93

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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.