Home / 7,831.18-11,752.61-3,151.23

Finding the Fourth Proportional to 7,831.18, 11,752.61 and 3,151.23

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Solution

The fourth proportional to 7,831.18, 11,752.61 and 3,151.23 is: 4,729.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.18 : 11,752.61 = 3,151.23 : x
  2. Step 2: Convert to fraction form
    7,831.18/11,752.61 = 3,151.23/x
  3. Step 3: Cross multiply
    7,831.18x = 11,752.61 × 3,151.23
  4. Step 4: Simplify right side
    7,831.18x = 37,035,173.27
  5. Step 5: Solve for x
    x = 37,035,173.27/7,831.18
  6. Step 6: Final answer
    x = 4,729.19

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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.