Home / 5,187.31-7,781.96-1,900.59

Finding the Fourth Proportional to 5,187.31, 7,781.96 and 1,900.59

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Solution

The fourth proportional to 5,187.31, 7,781.96 and 1,900.59 is: 2,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.31 : 7,781.96 = 1,900.59 : x
  2. Step 2: Convert to fraction form
    5,187.31/7,781.96 = 1,900.59/x
  3. Step 3: Cross multiply
    5,187.31x = 7,781.96 × 1,900.59
  4. Step 4: Simplify right side
    5,187.31x = 14,790,315.36
  5. Step 5: Solve for x
    x = 14,790,315.36/5,187.31
  6. Step 6: Final answer
    x = 2,851.25

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1.5x scale

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.