Home / 5,174.98-7,762.40-1,279.39

Finding the Fourth Proportional to 5,174.98, 7,762.40 and 1,279.39

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Solution

The fourth proportional to 5,174.98, 7,762.40 and 1,279.39 is: 1,919.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.98 : 7,762.40 = 1,279.39 : x
  2. Step 2: Convert to fraction form
    5,174.98/7,762.40 = 1,279.39/x
  3. Step 3: Cross multiply
    5,174.98x = 7,762.40 × 1,279.39
  4. Step 4: Simplify right side
    5,174.98x = 9,931,111.13
  5. Step 5: Solve for x
    x = 9,931,111.13/5,174.98
  6. Step 6: Final answer
    x = 1,919.06

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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.