Home / 5,187.34-7,782.36-1,489.87

Finding the Fourth Proportional to 5,187.34, 7,782.36 and 1,489.87

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Solution

The fourth proportional to 5,187.34, 7,782.36 and 1,489.87 is: 2,235.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.34 : 7,782.36 = 1,489.87 : x
  2. Step 2: Convert to fraction form
    5,187.34/7,782.36 = 1,489.87/x
  3. Step 3: Cross multiply
    5,187.34x = 7,782.36 × 1,489.87
  4. Step 4: Simplify right side
    5,187.34x = 11,594,658.33
  5. Step 5: Solve for x
    x = 11,594,658.33/5,187.34
  6. Step 6: Final answer
    x = 2,235.19

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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.