Home / 5,208.30-7,811.69-1,918.89

Finding the Fourth Proportional to 5,208.30, 7,811.69 and 1,918.89

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Solution

The fourth proportional to 5,208.30, 7,811.69 and 1,918.89 is: 2,878.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.30 : 7,811.69 = 1,918.89 : x
  2. Step 2: Convert to fraction form
    5,208.30/7,811.69 = 1,918.89/x
  3. Step 3: Cross multiply
    5,208.30x = 7,811.69 × 1,918.89
  4. Step 4: Simplify right side
    5,208.30x = 14,989,775.02
  5. Step 5: Solve for x
    x = 14,989,775.02/5,208.30
  6. Step 6: Final answer
    x = 2,878.06

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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.