Home / 8,215.86-12,325.95-3,831.06

Finding the Fourth Proportional to 8,215.86, 12,325.95 and 3,831.06

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Solution

The fourth proportional to 8,215.86, 12,325.95 and 3,831.06 is: 5,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.86 : 12,325.95 = 3,831.06 : x
  2. Step 2: Convert to fraction form
    8,215.86/12,325.95 = 3,831.06/x
  3. Step 3: Cross multiply
    8,215.86x = 12,325.95 × 3,831.06
  4. Step 4: Simplify right side
    8,215.86x = 47,221,454.01
  5. Step 5: Solve for x
    x = 47,221,454.01/8,215.86
  6. Step 6: Final answer
    x = 5,747.60

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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.