Home / 7,831.32-11,741.74-4,129.64

Finding the Fourth Proportional to 7,831.32, 11,741.74 and 4,129.64

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Solution

The fourth proportional to 7,831.32, 11,741.74 and 4,129.64 is: 6,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.32 : 11,741.74 = 4,129.64 : x
  2. Step 2: Convert to fraction form
    7,831.32/11,741.74 = 4,129.64/x
  3. Step 3: Cross multiply
    7,831.32x = 11,741.74 × 4,129.64
  4. Step 4: Simplify right side
    7,831.32x = 48,489,159.17
  5. Step 5: Solve for x
    x = 48,489,159.17/7,831.32
  6. Step 6: Final answer
    x = 6,191.70

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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.