Home / 5,290.10-7,935.82-1,778.60

Finding the Fourth Proportional to 5,290.10, 7,935.82 and 1,778.60

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Solution

The fourth proportional to 5,290.10, 7,935.82 and 1,778.60 is: 2,668.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.10 : 7,935.82 = 1,778.60 : x
  2. Step 2: Convert to fraction form
    5,290.10/7,935.82 = 1,778.60/x
  3. Step 3: Cross multiply
    5,290.10x = 7,935.82 × 1,778.60
  4. Step 4: Simplify right side
    5,290.10x = 14,114,605.33
  5. Step 5: Solve for x
    x = 14,114,605.33/5,290.10
  6. Step 6: Final answer
    x = 2,668.12

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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.