Home / 2,918-4,379.03-1,186.63

Finding the Fourth Proportional to 2,918, 4,379.03 and 1,186.63

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Solution

The fourth proportional to 2,918, 4,379.03 and 1,186.63 is: 1,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918 : 4,379.03 = 1,186.63 : x
  2. Step 2: Convert to fraction form
    2,918/4,379.03 = 1,186.63/x
  3. Step 3: Cross multiply
    2,918x = 4,379.03 × 1,186.63
  4. Step 4: Simplify right side
    2,918x = 5,196,288.37
  5. Step 5: Solve for x
    x = 5,196,288.37/2,918
  6. Step 6: Final answer
    x = 1,780.77

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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.