Home / 7,871.48-11,782.26-4,398.20

Finding the Fourth Proportional to 7,871.48, 11,782.26 and 4,398.20

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Solution

The fourth proportional to 7,871.48, 11,782.26 and 4,398.20 is: 6,583.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.48 : 11,782.26 = 4,398.20 : x
  2. Step 2: Convert to fraction form
    7,871.48/11,782.26 = 4,398.20/x
  3. Step 3: Cross multiply
    7,871.48x = 11,782.26 × 4,398.20
  4. Step 4: Simplify right side
    7,871.48x = 51,820,735.93
  5. Step 5: Solve for x
    x = 51,820,735.93/7,871.48
  6. Step 6: Final answer
    x = 6,583.35

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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.