Home / 5,639.54-7,781.80-3,370.86

Finding the Fourth Proportional to 5,639.54, 7,781.80 and 3,370.86

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Solution

The fourth proportional to 5,639.54, 7,781.80 and 3,370.86 is: 4,651.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.54 : 7,781.80 = 3,370.86 : x
  2. Step 2: Convert to fraction form
    5,639.54/7,781.80 = 3,370.86/x
  3. Step 3: Cross multiply
    5,639.54x = 7,781.80 × 3,370.86
  4. Step 4: Simplify right side
    5,639.54x = 26,231,358.35
  5. Step 5: Solve for x
    x = 26,231,358.35/5,639.54
  6. Step 6: Final answer
    x = 4,651.33

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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.