Home / 8,831.08-12,186.18-5,105.32

Finding the Fourth Proportional to 8,831.08, 12,186.18 and 5,105.32

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Solution

The fourth proportional to 8,831.08, 12,186.18 and 5,105.32 is: 7,044.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,831.08 : 12,186.18 = 5,105.32 : x
  2. Step 2: Convert to fraction form
    8,831.08/12,186.18 = 5,105.32/x
  3. Step 3: Cross multiply
    8,831.08x = 12,186.18 × 5,105.32
  4. Step 4: Simplify right side
    8,831.08x = 62,214,348.48
  5. Step 5: Solve for x
    x = 62,214,348.48/8,831.08
  6. Step 6: Final answer
    x = 7,044.93

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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.