Home / 5,240.29-7,860.49-2,078.50

Finding the Fourth Proportional to 5,240.29, 7,860.49 and 2,078.50

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Solution

The fourth proportional to 5,240.29, 7,860.49 and 2,078.50 is: 3,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.29 : 7,860.49 = 2,078.50 : x
  2. Step 2: Convert to fraction form
    5,240.29/7,860.49 = 2,078.50/x
  3. Step 3: Cross multiply
    5,240.29x = 7,860.49 × 2,078.50
  4. Step 4: Simplify right side
    5,240.29x = 16,338,001.59
  5. Step 5: Solve for x
    x = 16,338,001.59/5,240.29
  6. Step 6: Final answer
    x = 3,117.77

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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.