Home / 2,918.63-4,379.76-1,187.25

Finding the Fourth Proportional to 2,918.63, 4,379.76 and 1,187.25

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Solution

The fourth proportional to 2,918.63, 4,379.76 and 1,187.25 is: 1,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.63 : 4,379.76 = 1,187.25 : x
  2. Step 2: Convert to fraction form
    2,918.63/4,379.76 = 1,187.25/x
  3. Step 3: Cross multiply
    2,918.63x = 4,379.76 × 1,187.25
  4. Step 4: Simplify right side
    2,918.63x = 5,199,870.06
  5. Step 5: Solve for x
    x = 5,199,870.06/2,918.63
  6. Step 6: Final answer
    x = 1,781.62

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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.