Home / 5,279.56-7,920.15-1,816

Finding the Fourth Proportional to 5,279.56, 7,920.15 and 1,816

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Solution

The fourth proportional to 5,279.56, 7,920.15 and 1,816 is: 2,724.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.56 : 7,920.15 = 1,816 : x
  2. Step 2: Convert to fraction form
    5,279.56/7,920.15 = 1,816/x
  3. Step 3: Cross multiply
    5,279.56x = 7,920.15 × 1,816
  4. Step 4: Simplify right side
    5,279.56x = 14,382,992.40
  5. Step 5: Solve for x
    x = 14,382,992.40/5,279.56
  6. Step 6: Final answer
    x = 2,724.28

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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.