Home / 8,418.48-11,615.40-5,230.32

Finding the Fourth Proportional to 8,418.48, 11,615.40 and 5,230.32

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Solution

The fourth proportional to 8,418.48, 11,615.40 and 5,230.32 is: 7,216.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.48 : 11,615.40 = 5,230.32 : x
  2. Step 2: Convert to fraction form
    8,418.48/11,615.40 = 5,230.32/x
  3. Step 3: Cross multiply
    8,418.48x = 11,615.40 × 5,230.32
  4. Step 4: Simplify right side
    8,418.48x = 60,752,258.93
  5. Step 5: Solve for x
    x = 60,752,258.93/8,418.48
  6. Step 6: Final answer
    x = 7,216.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.