Home / 5,126.84-7,689.90-2,928.68

Finding the Fourth Proportional to 5,126.84, 7,689.90 and 2,928.68

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Solution

The fourth proportional to 5,126.84, 7,689.90 and 2,928.68 is: 4,392.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.84 : 7,689.90 = 2,928.68 : x
  2. Step 2: Convert to fraction form
    5,126.84/7,689.90 = 2,928.68/x
  3. Step 3: Cross multiply
    5,126.84x = 7,689.90 × 2,928.68
  4. Step 4: Simplify right side
    5,126.84x = 22,521,256.33
  5. Step 5: Solve for x
    x = 22,521,256.33/5,126.84
  6. Step 6: Final answer
    x = 4,392.81

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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.