Home / 5,278.98-7,918.32-2,158.11

Finding the Fourth Proportional to 5,278.98, 7,918.32 and 2,158.11

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Solution

The fourth proportional to 5,278.98, 7,918.32 and 2,158.11 is: 3,237.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.98 : 7,918.32 = 2,158.11 : x
  2. Step 2: Convert to fraction form
    5,278.98/7,918.32 = 2,158.11/x
  3. Step 3: Cross multiply
    5,278.98x = 7,918.32 × 2,158.11
  4. Step 4: Simplify right side
    5,278.98x = 17,088,605.58
  5. Step 5: Solve for x
    x = 17,088,605.58/5,278.98
  6. Step 6: Final answer
    x = 3,237.10

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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.