Home / 5,100.43-7,038.49-2,800.79

Finding the Fourth Proportional to 5,100.43, 7,038.49 and 2,800.79

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Solution

The fourth proportional to 5,100.43, 7,038.49 and 2,800.79 is: 3,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.43 : 7,038.49 = 2,800.79 : x
  2. Step 2: Convert to fraction form
    5,100.43/7,038.49 = 2,800.79/x
  3. Step 3: Cross multiply
    5,100.43x = 7,038.49 × 2,800.79
  4. Step 4: Simplify right side
    5,100.43x = 19,713,332.41
  5. Step 5: Solve for x
    x = 19,713,332.41/5,100.43
  6. Step 6: Final answer
    x = 3,865.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.