Home / 7,778.09-11,667.74-3,831.47

Finding the Fourth Proportional to 7,778.09, 11,667.74 and 3,831.47

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Solution

The fourth proportional to 7,778.09, 11,667.74 and 3,831.47 is: 5,747.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.09 : 11,667.74 = 3,831.47 : x
  2. Step 2: Convert to fraction form
    7,778.09/11,667.74 = 3,831.47/x
  3. Step 3: Cross multiply
    7,778.09x = 11,667.74 × 3,831.47
  4. Step 4: Simplify right side
    7,778.09x = 44,704,595.78
  5. Step 5: Solve for x
    x = 44,704,595.78/7,778.09
  6. Step 6: Final answer
    x = 5,747.50

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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.