Home / 2,918.88-4,380.14-1,187.50

Finding the Fourth Proportional to 2,918.88, 4,380.14 and 1,187.50

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Solution

The fourth proportional to 2,918.88, 4,380.14 and 1,187.50 is: 1,781.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.88 : 4,380.14 = 1,187.50 : x
  2. Step 2: Convert to fraction form
    2,918.88/4,380.14 = 1,187.50/x
  3. Step 3: Cross multiply
    2,918.88x = 4,380.14 × 1,187.50
  4. Step 4: Simplify right side
    2,918.88x = 5,201,416.25
  5. Step 5: Solve for x
    x = 5,201,416.25/2,918.88
  6. Step 6: Final answer
    x = 1,781.99

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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.